At srinagar temperature was

At Srinagar temperature was 5°C on Monday and then it dropped by 2°C on Tuesday. What was the temperature of Srinagar on Tuesday? On Wednesday, it rose by4°C. What was the temperature on this day?

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Question 37 Exercise 1.1

Answer:

At Srinagar, Temperature on monday = $-5\degree C$

on tuesday, temperature dropped by $2\degree C$

therefore, temperature on tuesday = $-5\degree C-2\degree C\ =\ -7\degree C$

On wednesday, temperature rose up by $4\degree C$

therefore, temperature on wednesday = $-7\degree C+4\degree C\ \ =\ -3\degree C$

thus, the temperature on tuesday = $-7\degree C$ and the temperature on wednesday = $-3\degree C$

Video transcript

hello everyone welcome to lido homework session today we are going to solve a problem from the chapter integers today's question is at srinagar temperature was minus 5 degree celsius on monday and then it dropped by 2 degree celsius on tuesday what was the temperature of srinagar on tuesday on wednesday it rose by plus 4 degree celsius what was the temperature on this day all right so before i help you in solving this problem i want you to take a minute read the question carefully and try solving this problem on your own feel free to pause the video at this point solve it and come back to the video all right i hope you tried solving it on your own now it's my turn to explain this to you so let me read the question again for you at srinagar temperature was minus 5 degree celsius on monday and then it dropped by 2 degrees celsius on tuesday what was the temperature of srinagar on tuesday on wednesday it rose by 4 degree celsius what was the temperature on this day ok so there are a few words that i would like to highlight in the question so if you look at this question carefully there are words dropped and rows so whenever we find the word dropped we mean we know that the temperature is going down by something so what we are going to do is we are going to conventionally use whenever the temperature drops we are going to use a negative integer to represent that and whenever the temperature rises we are going to use a positive integer to represent that i hope the convention is clear because this convention is important for how we are going to solve the rest of the problem now whenever you have word problems you need to follow the acronym u p s c what does that mean you need to understand the problem first then you need to plan how to solve it then solve the problem and then check for any silly mistakes and if you have done it correctly so now let's understand our problem properly first so at srinagar the temperature was minus degrees on monday so monday minus 5 degree celsius tuesday it dropped by 2 degree celsius and wednesday it rose by 4 degrees celsius now this is what is given to us already right what do we need to find out we need to find out what was the exact temperature on tuesday and what was the exact temperature on wednesday right now that we have understood the problem let's plan how to solve this so we know that the temperature began from degree celsius now when we say dropped by 2 degree celsius we have already told that whenever it is dropping we are going to note it as a negative integer which means minus 2 degree celsius now to find out the temperature on tuesday we are simply going to add these two integers okay so now let's solve this here we have two integers minus 5 and minus 2 both of them have the exact same sign which means the operation we are going to perform as addition so when i add 5 and 2 i will get the number now i have to give a sign to this number since both the integers in the question have negative sign the integer in the answer is also going to have a negative sign so this becomes minus 7 degree celsius so on monday the temperature of srinagar was minus 7 degree celsius here i want you to be careful that whenever you have word problems never forget to write the units all right so next next let's plan how to solve the second part of the problem so on wednesday the temperature rose by degree celsius so what was the temperature on tuesday minus degrees celsius so that is the number we are going to start with this time the temperature rows which means we are going to take this integer as a positive integer so now it becomes plus 4 degrees celsius now again notice that we have two integers but this time both these integers have different signs whenever we have two integers with different signs the operation we are going to perform is subtraction so 7 minus 4 is 3 so i'm going to write the number 3 now it's turn to give this number a sign so here we know that 7 has a greater value than 4 so we are going to take the sign of 7 which is negative and we are going it going to give it to the answer so our answer becomes minus 3 degrees celsius so now we know that on wednesday the temperature of srinagar was minus 3 degree celsius i hope you found this video helpful and fun if you have any other questions or know a different method of solving this question drop a comment below hit subscribe to get regular updates about this channel i will see you in the next session until then stay safe good bye

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Solution:

An integer is a number with no decimal or fractional part, from the set of negative and positive numbers, including zero.

The temperature of Srinagar on Monday = - 5°C

On Tuesday, it was dropped by 2°C

Temperature on Tuesday = - 5° C - 2° C = - 7°C

On Wednesday, it rose up by 4°C

Temperature on Wednesday = - 7°C + 4°C= - 3°C

Thus, the temperature on Tuesday was - 7°C and on Wednesday it was - 3°C.

☛ Check: NCERT Solutions for Class 7 Maths Chapter 1

Video Solution:

At Srinagar temperature was -5°C on Monday and then it dropped by 2°C on Tuesday. What was the temperature of Srinagar on Tuesday? On Wednesday, it rose by 4°C. What was the temperature on this day?

NCERT Solutions Class 7 Maths Chapter 1 Exercise 1.1 Question 3

Summary:

At Srinagar temperature was -5°C on Monday and then it dropped by 2°C on Tuesday and rose by 4°C on Wednesday. The measure of temperature on Tuesday and Wednesday were -7° C and -3° C respectively.

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