Question

The value of y varies directly with x. When y=2 2/5,x=3/5 what is the value of y when x is 4/5

A 1 1/5

B 3 3/5

C 3 1/5

D 5 1/5

Answer 1

the correct ans should be 88/15

Explanation:

since, y is directly proportional to x then,

y=kx where k=proportionality constant

when y=22/5 and x=3/5

or,22/5=k*3/5

or,22/5*5/3=k

•°•k=22/3

now, when x=4/5

we know,

y=kx

or,y=22/3*4/5

•°•y=88/15