PSLE A shop had a number of stereo systems for sale. After selling 136 of them in the morning and
38 of the remainder in the afternoon, it was left with
15 of the stereo systems. How many stereo systems were left?
Morning |
Remainder |
|
Afternoon |
Left |
136 |
3x1 |
5x1 |
4x5 |
1x5 |
17 u |
3 u |
5 u |
Fraction of the remainder left
= 1 -
38 =
58 5x18x1 Remainder =
1x55x5 Total
58 Remainder =
525 Total
Number of stereo systems sold in the morning
= 20 u - 3 u
= 17 u
17 u = 136
1 u = 136 ÷ 17 = 8
Number of stereo systems left
= 5 u
= 5 x 8
= 40
Answer(s): 40