Question on: JAMB Mathematics - 2015
Make x the subject of the equation
s = 2 + \(\frac{t}{5} \)(x + ⅗y)
s = 2 + \(\frac{t}{5} \)(x + ⅗y)
A
x = 5[(s − 2) ÷ t] + 3yt
B
x = 25[(s − 2) ÷ t] − 3ty
C
x = [1 ÷ (s − 2)3ty]
D
x = [5(s − 2) 2 ÷ 3ty] × t
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Correct Option: B
2 + t/5(x + 3/5y ) = s
t/5(x + 3/5y ) = s − 2
[(t(5x + 3y) ÷ 25)] = s − 2
t(5x + 3y) = 25 (s − 2)
5x + 3y = [(25(s − 2))÷ t]
5x = [(25(s − 2))÷ t] − 3y
Divide both sides by 5
x = [25(s − 2) − 3ty)]÷ 5t
t/5(x + 3/5y ) = s − 2
[(t(5x + 3y) ÷ 25)] = s − 2
t(5x + 3y) = 25 (s − 2)
5x + 3y = [(25(s − 2))÷ t]
5x = [(25(s − 2))÷ t] − 3y
Divide both sides by 5
x = [25(s − 2) − 3ty)]÷ 5t
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