PSLE A shop had a number of hard drives for sale. After selling 21 of them in the morning and
59 of the remainder in the afternoon, it was left with
14 of the hard drives. How many hard drives were left?
Morning |
Remainder |
|
Afternoon |
Left |
21 |
5x1 |
4x1 |
3x4 |
1x4 |
7 u |
5 u |
4 u |
Fraction of the remainder left
= 1 -
59 =
49 4x19x1 Remainder =
1x44x4 Total
49 Remainder =
416 Total
Number of hard drives sold in the morning
= 12 u - 5 u
= 7 u
7 u = 21
1 u = 21 ÷ 7 = 3
Number of hard drives left
= 4 u
= 4 x 3
= 12
Answer(s): 12