Mathematics (2018) Discuss

Solve for t in the equation \(\frac{3}{4}\)t +\(\frac{1}{3}\)(21 - t) =...

Share Question Share to WhatsApp
Question 9
A
\(\frac{9}{13}\) 
B
\(\frac{7}{13}\) 
C
D
9\(\frac{3}{5}\) 
Explanation.
Share Answer

\(\frac{3}{4}\) t + \(\frac{1}{3}\) (21 - t) = 11

Multiply through by the LCM of 4 and 3 which is 12

12 x(\(\frac{3}{4}\) t) + 12 x (\(\frac{1}{3}\) (21 - t)) = (11 x 12)

9t + 4(21 - t) = 132

9t + 84 - 4t = 132

5t + 84 = 132

5t = 132 - 84 = 48

t = \(\frac{48}{5}\)

t = 9 \(\frac{3}{5}\)

Answer is D


Correct Option:
D

Try this quiz in in E-test/CBT Mode     Mathematics (2018) in CBT Mode

Previous Question Next Question

Be the first to Comment on this

Sign in to post a comment


Question Map
Quiz link
Share Mathematics (2018) with your friends
Share to WhatsApp Share Quiz CBT mode Study mode copy link