Question

1/f=1/v-1/u
1/f=1/15 1/u=1/60​

Answer 1

Answer:

1/15= 1/v- 1/60

1/15 + 1/60= 1/ v

4/60+1/60 =1/v

5/60 =1/v

1/12= 1/v

v=12

Answer 2

Answer:

if You r a girl if u talked to a boy it means flirt.