Question

Type the missing number to complete the proportion. 4 deliveries in 2 hours = ? deliveries in 10 hours

Answer 1

ANSWER

20

EXPLANATION

We have the proportion given.

One way of solving this is writing:

4 deliveries = 2 hours

x deliveries = 10 hours

where x is the missing number

Then, cross-multiply:

4 * 10 = x * 2

=> 40 = 2x

Divide through by 2:

x = 40 / 2

x = 20

The missing number is 20.