Question

An automobile assembly line runs for 9three-fourths hours each day. Employees work three-fourths hour shifts. How many shifts are there in each day?
A. 9 shifts
B. 10 shifts
C. 12 shifts
D. 13 shifts

Answer 1

To solve this problem, we need to divide the total number of hours the assembly line runs by the length of each shift:

9 3/4 ÷ 3/4

To make the denominator the same, we can convert the whole number to a fraction:

39/4 ÷ 3/4

Now we can divide by multiplying by the reciprocal:

39/4 x 4/3 = 13

Therefore, there are 13 shifts each day. Answer choice D is correct.