15 of the flowers in a flower shop were carnations,
12 of them were lilies and the remaining 30 stalks were orchids.
- How many stalks of flowers were there in the shop?
- At the end of the day, the number of flowers left was 8 less than the number of flowers sold. How many stalks of flowers were sold?
(a)
Fraction of stalks of flowers that were orchids
= 1 -
15 -
12 = 1 -
210 -
510 = 1 -
710 =
310 3 u = 30
1 u = 30 ÷ 3 = 10
Number of stalks of flowers in the shop
= 10 u
= 10 x 10
= 100
(b)
Number of stalks of flowers sold = 1 p + 8
Number of stalks of flowers left = 1 p
Total number of stalks of flowers
= 1 p + 1 p + 8
= 2 p + 8
2 p + 8 = 100
2 p = 100 - 8
2 p = 92
1 p = 92 ÷ 2 = 46
Number of stalks of flowers sold
= 1 p + 8
= 46 + 8
= 54
Answer(s): (a) 100; (b) 54
