Question

In a rose garden, (x + 1) plants gave an average of 90 flowers, a plants gave an average of 80 flowers, and (x - 1) plants gave an average of 60 flowers. The entire garden average is 77 flowers then find 'x' ?​

Answer 1

Answer:

total no. of flowers=(x-1)90+80x+60(x-1)

90x+90+80x+60x-60

230x+30

total no. of plants = x+x+x+x-x

=3x

now, Average = 230x+30/3x=77

=230x+30=77×3x

=230x+30=231x

=30=231x-230x

30=x

x=30

Step-by-step explanation:

hope this helps you