PSLE A shop had a number of projectors for sale. After selling 49 of them in the morning and
13 of the remainder in the afternoon, it was left with
15 of the projectors. How many projectors were left?
Morning |
Remainder |
|
Afternoon |
Left |
49 |
1x1 |
2x1 |
4x2 |
1x2 |
7 u |
1 u |
2 u |
Fraction of the remainder left
= 1 -
13 =
23 2x13x1 Remainder =
1x25x2 Total
23 Remainder =
210 Total
Number of projectors sold in the morning
= 8 u - 1 u
= 7 u
7 u = 49
1 u = 49 ÷ 7 = 7
Number of projectors left
= 2 u
= 2 x 7
= 14
Answer(s): 14