PSLE A shop had a number of projectors for sale. After selling 33 of them in the morning and
17 of the remainder in the afternoon, it was left with
13 of the projectors. How many projectors were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
33 |
1x1 |
6x1 |
2x6 |
1x6 |
11 u |
1 u |
6 u |
Fraction of the remainder left
= 1 -
17 =
67 6x17x1 Remainder =
1x63x6 Total
67 Remainder =
618 Total
Number of projectors sold in the morning
= 12 u - 1 u
= 11 u
11 u = 33
1 u = 33 ÷ 11 = 3
Number of projectors sold in the afternoon
= 1 u
= 1 x 3
= 3
Answer(s): 3