PSLE A shop had a number of printers for sale. After selling 30 of them in the morning and
112 of the remainder in the afternoon, it was left with
12 of the printers. How many printers were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
30 |
1x1 |
11x1 |
1x11 |
1x11 |
10 u |
1 u |
11 u |
Fraction of the remainder left
= 1 -
112 =
1112 11x112x1 Remainder =
1x112x11 Total
1112 Remainder =
1122 Total
Number of printers sold in the morning
= 11 u - 1 u
= 10 u
10 u = 30
1 u = 30 ÷ 10 = 3
Number of printers sold in the afternoon
= 1 u
= 1 x 3
= 3
Answer(s): 3