Question

Given that R = 3st and that s = 5t, find R in terms of t.

Answer 1

• R=3st
• R=3×5t×t
• R=15t^2

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Answer 2

R = 15 t^2

Explanation:

R = 3st

s = 5t

Replace s in the first equation with 5t

R = 3 ( 5t)t

R = 15 t^2