Ai Tong School P5 SA1 2006 Math (Q38)

Amy kept 3/5 of her salary and gave the rest to her parents. After spending $800 on a handphone, she deposited 1/5 of the remaining amount. How much did she deposit if her parents received $2250?

Solution



2 units ----- $2250
1 unit ----- $2250 divided by 2 = $1125

Amy kept 3 units ----- $1125 x 3 = $3375
Spent of phone ----- $800
Balance ----- $3375 - $800 = $2575

Deposited 1/5 of balance ----- 1/5 x $2575 = $515

Answer: She deposited $515.