Question

(d) If y is directly proportional to
x when y= 1.25?
and x = 2 when y = 20, what is the value of
Х

Answer 1

Answer:

Case 1

y = 1.25

x = 2

Case 2

y = 20

x = ?

Now in proportion

y:x::y:x

1.25:2::20:x

1.25x = 2×20

1.25x = 40

x = 40/1.25

x = 32

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