PSLE A shop had a number of stereo systems for sale. After selling 65 of them in the morning and
311 of the remainder in the afternoon, it was left with
13 of the stereo systems. How many stereo systems were left?
Morning |
Remainder |
|
Afternoon |
Left |
65 |
3x1 |
8x1 |
2x8 |
1x8 |
13 u |
3 u |
8 u |
Fraction of the remainder left
= 1 -
311 =
811 8x111x1 Remainder =
1x83x8 Total
811 Remainder =
824 Total
Number of stereo systems sold in the morning
= 16 u - 3 u
= 13 u
13 u = 65
1 u = 65 ÷ 13 = 5
Number of stereo systems left
= 8 u
= 8 x 5
= 40
Answer(s): 40