PSLE A shop had a number of computers for sale. After selling 12 of them in the morning and
57 of the remainder in the afternoon, it was left with
15 of the computers. How many computers were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
12 |
5x1 |
2x1 |
4x2 |
1x2 |
3 u |
5 u |
2 u |
Fraction of the remainder left
= 1 -
57 =
27 2x17x1 Remainder =
1x25x2 Total
27 Remainder =
210 Total
Number of computers sold in the morning
= 8 u - 5 u
= 3 u
3 u = 12
1 u = 12 ÷ 3 = 4
Number of computers sold in the afternoon
= 5 u
= 5 x 4
= 20
Answer(s): 20