PSLE A shop had a number of mobile phones for sale. After selling 99 of them in the morning and
14 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 |
99 |
1x1 |
3x1 |
4x3 |
1x3 |
11 u |
1 u |
3 u |
Fraction of the remainder left
= 1 -
14 =
34 3x14x1 Remainder =
1x35x3 Total
34 Remainder =
315 Total
Number of mobile phones sold in the morning
= 12 u - 1 u
= 11 u
11 u = 99
1 u = 99 ÷ 11 = 9
Total number of mobile phones sold
= 12 u
= 12 x 9
= 108
Answer(s): 108