PSLE A shop had a number of hi-fi systems for sale. After selling 15 of them in the morning and
59 of the remainder in the afternoon, it was left with
13 of the hi-fi systems. How many hi-fi systems were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
15 |
5x1 |
4x1 |
2x4 |
1x4 |
3 u |
5 u |
4 u |
Fraction of the remainder left
= 1 -
59 =
49 4x19x1 Remainder =
1x43x4 Total
49 Remainder =
412 Total
Number of hi-fi systems sold in the morning
= 8 u - 5 u
= 3 u
3 u = 15
1 u = 15 ÷ 3 = 5
Number of hi-fi systems sold in the afternoon
= 5 u
= 5 x 5
= 25
Answer(s): 25