PSLE A shop had a number of hi-fi systems for sale. After selling 86 of them in the morning and
211 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 |
86 |
2x1 |
9x1 |
5x9 |
1x9 |
43 u |
2 u |
9 u |
Fraction of the remainder left
= 1 -
211 =
911 9x111x1 Remainder =
1x96x9 Total
911 Remainder =
954 Total
Number of hi-fi systems sold in the morning
= 45 u - 2 u
= 43 u
43 u = 86
1 u = 86 ÷ 43 = 2
Number of hi-fi systems sold in the afternoon
= 2 u
= 2 x 2
= 4
Answer(s): 4