Question

If Amy spent her entire pocket money, she could afford 8 candy bars and 8 comic books a week. She could also just afford 10 candy bars and 4 comic books a week. The price of a candy bar is ₹ 5. What is Amy's weekly pocket money?

Answer 1

$W=8br+8bk,$

$W=10br+4bk,$

$8br+8bk=10br+4bk,$

$2bk=br,$

$br=5,$

$bk=0.5br=2.5,$

$W=8\cdot 5+8\cdot 2.5=60.$