PSLE A shop had a number of laptops for sale. After selling 42 of them in the morning and
511 of the remainder in the afternoon, it was left with
13 of the laptops. How many laptops were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
42 |
5x1 |
6x1 |
2x6 |
1x6 |
7 u |
5 u |
6 u |
Fraction of the remainder left
= 1 -
511 =
611 6x111x1 Remainder =
1x63x6 Total
611 Remainder =
618 Total
Number of laptops sold in the morning
= 12 u - 5 u
= 7 u
7 u = 42
1 u = 42 ÷ 7 = 6
Number of laptops sold in the afternoon
= 5 u
= 5 x 6
= 30
Answer(s): 30