PSLE A shop had a number of massage chairs for sale. After selling 390 of them in the morning and
19 of the remainder in the afternoon, it was left with
16 of the massage chairs. How many massage chairs were left?
Morning |
Remainder |
|
Afternoon |
Left |
390 |
1x1 |
8x1 |
5x8 |
1x8 |
39 u |
1 u |
8 u |
Fraction of the remainder left
= 1 -
19 =
89 8x19x1 Remainder =
1x86x8 Total
89 Remainder =
848 Total
Number of massage chairs sold in the morning
= 40 u - 1 u
= 39 u
39 u = 390
1 u = 390 ÷ 39 = 10
Number of massage chairs left
= 8 u
= 8 x 10
= 80
Answer(s): 80