PSLE A shop had a number of projectors for sale. After selling 36 of them in the morning and
711 of the remainder in the afternoon, it was left with
15 of the projectors. How many projectors were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
36 |
7x1 |
4x1 |
4x4 |
1x4 |
9 u |
7 u |
4 u |
Fraction of the remainder left
= 1 -
711 =
411 4x111x1 Remainder =
1x45x4 Total
411 Remainder =
420 Total
Number of projectors sold in the morning
= 16 u - 7 u
= 9 u
9 u = 36
1 u = 36 ÷ 9 = 4
Number of projectors sold in the afternoon
= 7 u
= 7 x 4
= 28
Answer(s): 28