PSLE A shop had a number of hi-fi systems for sale. After selling 56 of them in the morning and
211 of the remainder in the afternoon, it was left with
12 of the hi-fi systems. How many hi-fi systems were left?
Morning |
Remainder |
|
Afternoon |
Left |
56 |
2x1 |
9x1 |
1x9 |
1x9 |
7 u |
2 u |
9 u |
Fraction of the remainder left
= 1 -
211 =
911 9x111x1 Remainder =
1x92x9 Total
911 Remainder =
918 Total
Number of hi-fi systems sold in the morning
= 9 u - 2 u
= 7 u
7 u = 56
1 u = 56 ÷ 7 = 8
Number of hi-fi systems left
= 9 u
= 9 x 8
= 72
Answer(s): 72