PSLE A shop had a number of hi-fi systems for sale. After selling 343 of them in the morning and
111 of the remainder in the afternoon, it was left with
16 of the hi-fi systems. How many hi-fi systems were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
343 |
1x1 |
10x1 |
5x10 |
1x10 |
49 u |
1 u |
10 u |
Fraction of the remainder left
= 1 -
111 =
1011 10x111x1 Remainder =
1x106x10 Total
1011 Remainder =
1060 Total
Number of hi-fi systems sold in the morning
= 50 u - 1 u
= 49 u
49 u = 343
1 u = 343 ÷ 49 = 7
Number of hi-fi systems sold in the afternoon
= 1 u
= 1 x 7
= 7
Answer(s): 7