PSLE A shop had a number of stereo systems for sale. After selling 35 of them in the morning and
19 of the remainder in the afternoon, it was left with
12 of the stereo systems. How many stereo systems were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
35 |
1x1 |
8x1 |
1x8 |
1x8 |
7 u |
1 u |
8 u |
Fraction of the remainder left
= 1 -
19 =
89 8x19x1 Remainder =
1x82x8 Total
89 Remainder =
816 Total
Number of stereo systems sold in the morning
= 8 u - 1 u
= 7 u
7 u = 35
1 u = 35 ÷ 7 = 5
Number of stereo systems sold in the afternoon
= 1 u
= 1 x 5
= 5
Answer(s): 5