15 of the flowers in a flower shop were daffodils,
12 of them were orchids and the remaining 21 stalks were lilies.
- 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 lilies
= 1 -
15 -
12 = 1 -
210 -
510 = 1 -
710 =
310 3 u = 21
1 u = 21 ÷ 3 = 7
Number of stalks of flowers in the shop
= 10 u
= 10 x 7
= 70
(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 = 70
2 p = 70 - 8
2 p = 62
1 p = 62 ÷ 2 = 31
Number of stalks of flowers sold
= 1 p + 8
= 31 + 8
= 39
Answer(s): (a) 70; (b) 39