Question

Doug has 5 times as many erasers as Antonio. If Antonio had 64 more erasers, the two boys would have exactly the same amount. How many erasers does Doug have?

Answer 1

d = 5a

d = a + 64

so 5a = a+64
4a = 64
a = 16

I said d = 5a, so Doug has 80 erasers , (Anthony has 16)