Question

5.2 Sana and Fatima participated in a race against each other. 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, and then won by
20 seconds in the third part. She lost by 25 seconds in the fourth part and lost by 37 seconds in the
fifth part. Sana won by 12 seconds in the last part. Who was ahead by the end of the race?
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Answer 1

Step-by-step explanation:

Let winning time be a positive integer and losing time is a negative integer, as it is opposite of winning.

Let winning time be a positive integer and losing time is a negative integer, as it is opposite of winning.1 minute = 60 seconds

Let winning time be a positive integer and losing time is a negative integer, as it is opposite of winning.1 minute = 60 secondsTherefore, Sana’s total difference time with Fatima

Let winning time be a positive integer and losing time is a negative integer, as it is opposite of winning.1 minute = 60 secondsTherefore, Sana’s total difference time with Fatima =10−60+20−25−37+12

Let winning time be a positive integer and losing time is a negative integer, as it is opposite of winning.1 minute = 60 secondsTherefore, Sana’s total difference time with Fatima =10−60+20−25−37+12=42−122

Let winning time be a positive integer and losing time is a negative integer, as it is opposite of winning.1 minute = 60 secondsTherefore, Sana’s total difference time with Fatima =10−60+20−25−37+12=42−122=−80 Seconds

Let winning time be a positive integer and losing time is a negative integer, as it is opposite of winning.1 minute = 60 secondsTherefore, Sana’s total difference time with Fatima =10−60+20−25−37+12=42−122=−80 Seconds

Let winning time be a positive integer and losing time is a negative integer, as it is opposite of winning.1 minute = 60 secondsTherefore, Sana’s total difference time with Fatima =10−60+20−25−37+12=42−122=−80 Seconds

Let winning time be a positive integer and losing time is a negative integer, as it is opposite of winning.1 minute = 60 secondsTherefore, Sana’s total difference time with Fatima =10−60+20−25−37+12=42−122=−80 Seconds Therefore, Sana lost the race by 80 seconds or by 1 min 20 seconds.

Let winning time be a positive integer and losing time is a negative integer, as it is opposite of winning.1 minute = 60 secondsTherefore, Sana’s total difference time with Fatima =10−60+20−25−37+12=42−122=−80 Seconds Therefore, Sana lost the race by 80 seconds or by 1 min 20 seconds.Which means Fatima, won the race.

Answer 2

Step-by-step explanation:

Let winning time be a positive integer and losing time is a negative integer, as it is opposite of winning.

1 minute = 60 seconds

Therefore, Sana’s total difference time with Fatima

=10−60+20−25−37+12

=42−122

=−80 Seconds

Therefore, Sana lost the race by 80 seconds or by 1 min 20 seconds.

Which means Fatima, won the race.

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