PSLE A shop had a number of computers for sale. After selling 133 of them in the morning and
111 of the remainder in the afternoon, it was left with
13 of the computers. How many computers were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
133 |
1x1 |
10x1 |
2x10 |
1x10 |
19 u |
1 u |
10 u |
Fraction of the remainder left
= 1 -
111 =
1011 10x111x1 Remainder =
1x103x10 Total
1011 Remainder =
1030 Total
Number of computers sold in the morning
= 20 u - 1 u
= 19 u
19 u = 133
1 u = 133 ÷ 19 = 7
Total number of computers sold
= 20 u
= 20 x 7
= 140
Answer(s): 140