Question

Fred and john have 153 marbles in all.if fred has 30% marbles less than john.How many marbles does John have.

Answer 1

Answer:

90 marbles

Step-by-step explanation:

Let

John=x and Fred=y

So, x+y=153 and

y=70/100 * x = 70x/100

(30% less is same as 70%)

Substitute new value of y in x+y=153

x + 70x/100 = 153

100x/100 + 70x/100=153

170x/100=153

170x=15300

x=15300/170=1530/17

=90 marbles