andrew has as much money as john and mark have together. joh

Question

andrew has as much money as john and mark have together. john has $100 more than Mark. The three boys have $400 altogether. How much money does John have?

Answer 1

a = m+j, j=100+m, a+m+j = 400, John has how much??

m+100+m +m + 100+m = 400

4m = 200

m = 50

j = $150 for John

m has $50

a has $200

sum = $400