PSLE A shop had a number of hard drives for sale. After selling 22 of them in the morning and
14 of the remainder in the afternoon, it was left with
15 of the hard drives. How many hard drives were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
22 |
1x1 |
3x1 |
4x3 |
1x3 |
11 u |
1 u |
3 u |
Fraction of the remainder left
= 1 -
14 =
34 3x14x1 Remainder =
1x35x3 Total
34 Remainder =
315 Total
Number of hard drives sold in the morning
= 12 u - 1 u
= 11 u
11 u = 22
1 u = 22 ÷ 11 = 2
Total number of hard drives sold
= 12 u
= 12 x 2
= 24
Answer(s): 24