Question

Sloane brought 20 erasers and pens in total. Each pen costs $2 while each eraser costs $0.40. If he spent $32.50 in all, how many erasers did he buy?

Answer 1

A) P + E = 20B) 2*P + .40*E = 32.50Multiplying A) by -2A) -2P -2E = -40 then we add equation BB) 2*P + .40*E = 32.50-1.6E = -7.50The answer does not equal an integer. Is the problem typed correctly?