PSLE A shop had a number of hard drives for sale. After selling 60 of them in the morning and
112 of the remainder in the afternoon, it was left with
12 of the hard drives. How many hard drives were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
60 |
1x1 |
11x1 |
1x11 |
1x11 |
10 u |
1 u |
11 u |
Fraction of the remainder left
= 1 -
112 =
1112 11x112x1 Remainder =
1x112x11 Total
1112 Remainder =
1122 Total
Number of hard drives sold in the morning
= 11 u - 1 u
= 10 u
10 u = 60
1 u = 60 ÷ 10 = 6
Number of hard drives sold in the afternoon
= 1 u
= 1 x 6
= 6
Answer(s): 6