Ahmad has $1380 more than Ben at first. After each of them spent $640, Ahmad had 5 times as much money as Ben. How much did Ben have at first?

Guest Oct 4, 2021

#1**+2 **

Initially

a = 1380 + b

then

(a-640) = 5 (b - 640) sub in the red equation

(1380+b) - 640 = 5b - 3200

b = 985

ElectricPavlov Oct 4, 2021