Question

y varies jointly with p and q. When p = 4 and q = 5, y = 60. Find y when p = 5 and q = 8. PLEASE Help :(

Answer 1

y = k p q
60 = k (5)(4)
60= 20 k
k=3

Answer 2

y=k(pq)

Answer 3

y= 3 p q
y = 3 (5)(8)

Answer 4

Do the way imran is doing..........

Answer 5

i dont know how to do itttt, i just dont get it

Answer 6

y=k(pq)
Now when p=4,q=5,y=60so
60=k(4*5)
k=3
so the equation becomes y=3pq
now put p=5 and q=8
y=3*5*8=120