. The number of pages (p) that Ethan reads varies directly as the number of
hours (t) he is reading.
A. write the variation equation
B. If he can read 21 pages in 14 minutes, how may pages can he read in 21
minutes?
hours (t) he is reading.
A. write the variation equation
B. If he can read 21 pages in 14 minutes, how may pages can he read in 21
minutes?
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Verified answer
In the given problem, apply your knowledge in algebraic expression specially in mathematical operation and solving unknown variables.
Given:
number of pages (p) = 21
number of hours (t) = 14 min
t = 21 minutes
Solution:
A Write the variation equation
p = k/t
hours = 60 mins.
21 = k/(14/60)
21 = 60k/14
21×14 = 60k
k = 49/10
p = k/t
p = 49/10t
B. How may pages can he read in 21
minutes?
p = 49/10t
p = 49/10 ÷ 21/60
p = 49/10 × 60/21
p = 14
14 pages
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