PSLE A shop had a number of printers for sale. After selling 162 of them in the morning and
18 of the remainder in the afternoon, it was left with
15 of the printers. How many printers were left?
Morning |
Remainder |
|
Afternoon |
Left |
162 |
1x1 |
7x1 |
4x7 |
1x7 |
27 u |
1 u |
7 u |
Fraction of the remainder left
= 1 -
18 =
78 7x18x1 Remainder =
1x75x7 Total
78 Remainder =
735 Total
Number of printers sold in the morning
= 28 u - 1 u
= 27 u
27 u = 162
1 u = 162 ÷ 27 = 6
Number of printers left
= 7 u
= 7 x 6
= 42
Answer(s): 42