Question

All the members of a construction crew work at the same pace. Four members of the crew, working together, are able to pour foundations in 32 hours.
a
How many hours would this job take if there were half as many workers?

Answer 1

Half of 4 is 2 so set up a proportion using 4, 32, and 2.

$\frac{4}{32} =\frac{2}{y}$

Then, cross multiply and solve for y.

$4y=64$

$64/4=16$

$y=16 hours$

Answer 2

This would take 16 hours.