Question

A gardener has nine rose bushes to plant: three have red flowers and six have yellow flowers. If they plant them in a row in random order, find the probability that the three red rose bushes are not separated.​

Answer 1

Answer:

x = number of red bushes

x + 20 = number of yellow bushes

5x = 3(x + 20)

5x = 3x + 60

2x = 60

x = 30

There are 30 red bushes.