Question

If y is directly proportional to X and y equal to 12 and X equal to 16 what is the value of x and y equals to 5

Answer 1

Answer:

Y is directly proportional to 1/x

xy=k (where k is constant)

so,

for x=2 and y=20

k=xy

k=2×20

k=40-(1)

now,

for y=1.25

k=xy

k=x×1.25

k=1.25x-(2)

from equation (1) & (2)

40=1.25x

40/1.25=x

x=32

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