Question

Sonya had 30 minutes to do a three-problem quiz. She spent 10 9/10 minutes on question A and 6 3/5 minutes on question B. How much time did she have left for question C?

Answer 1

time left for question C = 12 1/2

Explanation:

Total time required for the three quiz= 30 minutes

time spent on question A= 10 9/10 minutes

Time spent on question b= 6 3/5 minutes

Time spent on Question c= Total time required for the three quiz -( time spent on question A+Time spent on question b)

30 - ( 10 9/10 + 6 3/5)

30 -16 (9+ 6/10)

30- 16 15/10( 15/10 = 1 5/10)

30 - 16 + 1 5/10

30 - 17 5/10

From 30, we remove 1 whole number to subtract the fraction from the other number so we have

29 - 17 ( 1 -5/10)

=12 5/10 = 12 1/2