PSLE A shop had a number of mobile phones for sale. After selling 4 of them in the morning and
47 of the remainder in the afternoon, it was left with
13 of the mobile phones. How many mobile phones were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
4 |
4x1 |
3x1 |
2x3 |
1x3 |
2 u |
4 u |
3 u |
Fraction of the remainder left
= 1 -
47 =
37 3x17x1 Remainder =
1x33x3 Total
37 Remainder =
39 Total
Number of mobile phones sold in the morning
= 6 u - 4 u
= 2 u
2 u = 4
1 u = 4 ÷ 2 = 2
Number of mobile phones sold in the afternoon
= 4 u
= 4 x 2
= 8
Answer(s): 8