Answer:
C
Step-by-step explanation:
find the value of w and t by solving the equations simultaneously.
2w + 4t = 14 → (1)
4w + 5t = 25 → (2)
multiplying (1) by - 2 and adding to (2) will eliminate w
- 4w - 8t = - 28 → (3)
add (2) + (3) term by term to eliminate w
0 - 3t = - 3
- 3t = - 3 ( divide both sides by - 3 )
t = 1
substitute t = 1 into either of the 2 equations and solve for w
substituting into (1)
2w + 4(1) = 14
2w + 4 = 14 ( subtract 4 from both sides )
2w = 10 ( divide both sides by 2 )
w = 5
Then
2w + 3t = 2(5) + 3(1) = 10 + 3 = 13
