PSLE A shop had a number of printers for sale. After selling 140 of them in the morning and
110 of the remainder in the afternoon, it was left with
15 of the printers. How many printers were left?
Morning |
Remainder |
|
Afternoon |
Left |
140 |
1x1 |
9x1 |
4x9 |
1x9 |
35 u |
1 u |
9 u |
Fraction of the remainder left
= 1 -
110 =
910 9x110x1 Remainder =
1x95x9 Total
910 Remainder =
945 Total
Number of printers sold in the morning
= 36 u - 1 u
= 35 u
35 u = 140
1 u = 140 ÷ 35 = 4
Number of printers left
= 9 u
= 9 x 4
= 36
Answer(s): 36