Problema Solution
Jane had $7 and her sister had $2. Their parents gave each of them an equal amount of money. Then, Jane had twice as much money as her sister. How much money did their parents give each of them?
Answer provided by our tutors
let 'x' be the money that the parents gave to Jane and her sister each
Jane will have 7+x dollars
Jane's sister will have 2 + x dollars
Jane had twice as much money as her sister thus
7 + x = 2(2 + x)
7 + x = 4 + 2x
4 + 2x = 7 + x
2x - x = 7 - 4
x = $3
the parents gave $3 to each.