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John makes $42.00 for a full day of work; what will he make if he works 2/7 of a day?

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4 Answers

Cross-multiply to solve.
x        2
—  =  —
42      7
 
(7)x = 2(42)
 
7x = 84
 
 
Isolate x by dividing both sides of the equation by 7.
 
7x       84
—   =  —
(7)      (7)
 
 
        84
x  =  —
         7
 
 
Simplify.
 
x = 12
 
 
Remember that you're solving for a dollar amount.
 
$12
 
 
Hi Tami;
($42)(2/7)
This is also...
($42/1)(2/7)
Let's multiply the numerators, numbers on top, together...
($42)(2)=$84
Let's multiply the denominators, numbers on bottom, together...
(1)(7)=7
$84/7
$12
Hi Tami,
 
John makes $42.00 for a full day of work.
 
He works 2/7 of a day =2/7×42
 
                                 =2×6=12
 
So he will make $12 if he works 2/7 of a day.