if an employee earns $638 in 88 hours, how much does he earn in 40 hours?

Question

how much does he earn in 40 hours?

Answer 1

money/hours: 638/88 = x/40       Cross multiply.

88x = 25,520

x = $290

Answer 2

set up two fractions

 

showing that $638 corresponds to 88 hours as $x corresponds to 40 hours

 

638/88 = x/40

 

cross multiply

 

88x = 25520

 

x = $290

 

Or think of it this way:

 

the employee earns 638/88 hourly or $7.25 in one hour

 

therefore he/she would get paid 40·($7.25) = $290