PSLE A shop had a number of stereo systems for sale. After selling 24 of them in the morning and
110 of the remainder in the afternoon, it was left with
12 of the stereo systems. How many stereo systems were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
24 |
1x1 |
9x1 |
1x9 |
1x9 |
8 u |
1 u |
9 u |
Fraction of the remainder left
= 1 -
110 =
910 9x110x1 Remainder =
1x92x9 Total
910 Remainder =
918 Total
Number of stereo systems sold in the morning
= 9 u - 1 u
= 8 u
8 u = 24
1 u = 24 ÷ 8 = 3
Total number of stereo systems sold
= 9 u
= 9 x 3
= 27
Answer(s): 27