Question

(b) 2/7 of the flowers in a vase are red 3/7 of them are white and the rest are yellow. If the vase
has 21 flowers how many are yellow?​

Answer 1

Answer:

6 = Yellow flowers.

Step-by-step explanation:

Number of red flowers in the vase = 2/7

Number of white flowers in the vase = 3/7

Total number of flowers in the vase = 21

let the number of yellow flowers in the vase be x

then,

= 2/7 of 21 = 6 (red flowers)

= 3/7 of 21 = 9 (white flowers)

If we add 6 and 9 with each other and then subtract it from 21 the we will get the number of yellow flowers -

= 21-(6 + 9)

= 21 - 15

= 6 (Number of yellow flowers in the vase)