PSLE A shop had a number of mobile phones for sale. After selling 156 of them in the morning and
712 of the remainder in the afternoon, it was left with
15 of the mobile phones. How many mobile phones were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
156 |
7x1 |
5x1 |
4x5 |
1x5 |
13 u |
7 u |
5 u |
Fraction of the remainder left
= 1 -
712 =
512 5x112x1 Remainder =
1x55x5 Total
512 Remainder =
525 Total
Number of mobile phones sold in the morning
= 20 u - 7 u
= 13 u
13 u = 156
1 u = 156 ÷ 13 = 12
Total number of mobile phones sold
= 20 u
= 20 x 12
= 240
Answer(s): 240