PSLE A shop had a number of laptops for sale. After selling 40 of them in the morning and
27 of the remainder in the afternoon, it was left with
13 of the laptops. How many laptops were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
40 |
2x1 |
5x1 |
2x5 |
1x5 |
8 u |
2 u |
5 u |
Fraction of the remainder left
= 1 -
27 =
57 5x17x1 Remainder =
1x53x5 Total
57 Remainder =
515 Total
Number of laptops sold in the morning
= 10 u - 2 u
= 8 u
8 u = 40
1 u = 40 ÷ 8 = 5
Number of laptops sold in the afternoon
= 2 u
= 2 x 5
= 10
Answer(s): 10