Question

In a jazz band, Ben plays the saxophone, Jack plays the

trumpet and Lily sings. They are all the same age. There
are 3 more members of the jazz band,who are 17, 18 and
19 years old, respectively. The average age of the jazz
band is 19. How old is Lily?

Answer 1

20 years old :)

i hope this picture helps :)

Answer 2

Lily is 20 years old.

Explanation:

6 × 19 = 114

( 114 - 17 - 18 - 19 ) ÷ 3

= 60 ÷ 3

= 20