A worker can pack 144 boxes of shirts in 3 hours. At this rate, how long would he take to pack 240 boxes of shirts?

Question

plealaw help to solve this problem.

Answer 1

This is a proportionality problem:

 

3 hours → 144 boxes

x hours → 240 boxes

 

The proportionality is:

 

x is to 3 as 240 is to 144, or stated as an expression,

 

x/3 = 240/144

 

Solve for x and get

 

x = 3(240/144) = 5

 

So in 5 hours the worker can pack 240 boxes.