Sana and Fatima participated in an apple race. The race was conducted in 6 parts. In the first part, Sana won by 10 seconds. In the second part she lost by 1 minute, then won by 20 seconds in the third part and lost by 25 seconds in the fourth part, she lost by 37 seconds in the fifth part and won by 12 seconds in the last part. Who won the race finally

Solution:

To solve the given problem let us take winning time to be a positive integer and losing time to be a negative integer.

Now, Sana’s total time (winning/losing)

= (10 - 60 + 20 - 25 - 37 + 12) seconds

= (42 - 122) seconds

= - 80 second

Hence, Sana lost the race by 80 seconds or by 1 min & 20 seconds. Therefore, Fatima won the race

✦ Try This: Evaluate; 10 + 60 - 20 - 25 + 37 - 12

To evaluate the above given expression 10 + 60 - 20 - 25 + 37 - 12 we can simply apply the integer rules and properties of integers to get the required answer

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 1

NCERT Exemplar Class 7 Maths Chapter 1 Exercise Problem 130

Sana and Fatima participated in an apple race. The race was conducted in 6 parts. In the first part, Sana won by 10 seconds. In the second part she lost by 1 minute, then won by 20 seconds in the third part and lost by 25 seconds in the fourth part, she lost by 37 seconds in the fifth part and won by 12 seconds in the last part. Who won the race finally

Summary:

After applying the integer rules we examined that Sana lost the race by 80 seconds. Therefore, Fatima won the race

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