Question

john spent 2/3 of his money on a pen and a calculator. The calculator cost 3 times as much as the pen. if the calculator cost $24, how much money did he have left?

Answer 1

c=3 times p
c=3p
c=24
24=3p
divide both sides by 3
8=p

2/3 of money=c+p
2/3 of money=24+8
2/3 of money=32

how much he had left
all-2/3=1/3
so
2/3 of money =32
divide both sides by 2
1/3 of money=16

he had $16 left

Answer 2

24 calculator 8 pens so 32 all together he had 16 dollars left because the fraction is 32/48 equals 2/3