Question

Suppose p varies directly with d, and p = 3 when d = 5. What is the value of d when p = 12?

Answer 1

@hartnn

Answer 2

'p varies directly with d'
so,
p=kd
from p=3, d=5, first find the value of k

Answer 3

ok

Answer 4

Whats the next step?

Answer 5

now you know 'k'
and p=12
so again use
p=kd and find 'd'

Answer 6

I don't know how

Answer 7

p=kd
3 = 5k

so, k = 3/5

Answer 8

Continue

Answer 9

p=kd
12 = (3/5)d

find d from here

Answer 10

would the answer be 36/5?

Answer 11

nooooo

Answer 12

14?

Answer 13

d= 12*5/3

now simplify :)

Answer 14

20!!

Answer 15

yes!!