Question

The city of Miami is tracking rainfall totals over the past month. They have been recording weekly totals for the month of September. The recorded data is: Week 1, 3.49″; Week 2, 1.73″; Week 3, 12.38″; and Week 4, 0.21″. The city wants to record the total rainfall in September to the nearest tenth of an inch. If they round each week's total to the nearest tenth before calculating September's total, what is the total estimated rainfall for the month?

Answer 1

17.80"

Explanation:

Weekly Rainfall total for September :

Week 1, 3.49″

Week 2, 1.73″

Week 3, 12.38″

Week 4, 0.21″

Rounding each week's total to the nearest tenth of an INCH before summing up:

WEEK 1 ; 3.50''

WEEK 2 ; 1.70"

WEEK 3 ; 12.40"

WEEK 4 ; 0.20"

TOTAL RAINFALL FOR SEPTEMBER :

(WEEK 1 + WEEK 2 + WEEK 3 + WEEK 4)

(3.50 + 1.70 + 12.40 + 0.20)

= 17.80"