PSLE A shop had a number of mobile phones for sale. After selling 52 of them in the morning and
29 of the remainder in the afternoon, it was left with
15 of the mobile phones. How many mobile phones were left?
Morning |
Remainder |
|
Afternoon |
Left |
52 |
2x1 |
7x1 |
4x7 |
1x7 |
26 u |
2 u |
7 u |
Fraction of the remainder left
= 1 -
29 =
79 7x19x1 Remainder =
1x75x7 Total
79 Remainder =
735 Total
Number of mobile phones sold in the morning
= 28 u - 2 u
= 26 u
26 u = 52
1 u = 52 ÷ 26 = 2
Number of mobile phones left
= 7 u
= 7 x 2
= 14
Answer(s): 14