Mark, Jordan, Kenny and Gabriel shared $168. Gabriel received 1/7 of the total amount of money received by Mark, Kenny and Jordan. Mark received 3/4 of the total amount of money received by Kenny and Jordan. Jordan received 2/5 as much as Kenny. How much must Kenny give to Jordan so that they would have the same amount of money?
g =(1/7)(m+k+j)
m = (3/4)(k+j)
j = (2/5) k
g+m+k+j = 168
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7 g = (m+k+j)
g = 168 - (m+k+j)
-------------------------- add
8 g = 168
g = 21
go back
m+k+j = 21*7 = 147
but m = .75(k+j)
1.75 (k+j) = 147
k+j = 84
m = .75 *84 = 63
but j= 2/5 k
so 7/5 k = 84
k = 60
j = (2/5) k
so j = 24
now g = 21 , m = 63 , k = 60 , j = 24
your turn