Answer:
Step-by-step explanation:
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Answer:
y = 25
Step-by-step explanation:
Given that the quantities are proportional then the equation relating them is
y = kx ← k is the constant of proportion
To find k use the condition y = 10 when x = 6
k = =
=
y = x ← equation of proportion
When x = 15, then
y = × 15 = 5 × 5 = 25