PSLE A shop had a number of stereo systems for sale. After selling 126 of them in the morning and
712 of the remainder in the afternoon, it was left with
16 of the stereo systems. How many stereo systems were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
126 |
7x1 |
5x1 |
5x5 |
1x5 |
18 u |
7 u |
5 u |
Fraction of the remainder left
= 1 -
712 =
512 5x112x1 Remainder =
1x56x5 Total
512 Remainder =
530 Total
Number of stereo systems sold in the morning
= 25 u - 7 u
= 18 u
18 u = 126
1 u = 126 ÷ 18 = 7
Total number of stereo systems sold
= 25 u
= 25 x 7
= 175
Answer(s): 175