PSLE A shop had a number of television sets for sale. After selling 27 of them in the morning and
111 of the remainder in the afternoon, it was left with
12 of the television sets. How many television sets were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
27 |
1x1 |
10x1 |
1x10 |
1x10 |
9 u |
1 u |
10 u |
Fraction of the remainder left
= 1 -
111 =
1011 10x111x1 Remainder =
1x102x10 Total
1011 Remainder =
1020 Total
Number of television sets sold in the morning
= 10 u - 1 u
= 9 u
9 u = 27
1 u = 27 ÷ 9 = 3
Total number of television sets sold
= 10 u
= 10 x 3
= 30
Answer(s): 30