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13 Jan 2023, 02:30
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A car garage employs 3 mechanics. Three mechanics are able to fully service 6 cars in 4 hours. If the car garage doubled its number of mechanics, how long would it take for the garage to fully service 15 cars?
A. 5 hours
B. 4 hours
C. 6 hours
D. 6.5 hours
E. 8 hours
A. 5 hours
B. 4 hours
C. 6 hours
D. 6.5 hours
E. 8 hours
13 Jan 2023, 03:57
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Bookmarks
Bunuel
A car garage employs 3 mechanics. Three mechanics are able to fully service 6 cars in 4 hours. If the car garage doubled its number of mechanics, how long would it take for the garage to fully service 15 cars?
A. 5 hours
B. 4 hours
C. 6 hours
D. 6.5 hours
E. 8 hours
A. 5 hours
B. 4 hours
C. 6 hours
D. 6.5 hours
E. 8 hours
Three mechanics can service 6 cars in 4 hours.
For a single car they will take 1/6 the time.
For 15 cars they will 15 times the time taken for one car
Time taken for 15 cars = 15 * 1/6 * 4
Now if the number of mechanics are doubled, the time required will be half the normal time required
Net time = \(\frac{1}{2} * 15 * \frac{1}{6} * 4\) = 5 hours
Option A
15 Jan 2023, 02:19
Kudos
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m1 * t1/ w1 = m2 * t2/ w2
3*4/6 = 6 * x/15
solve for x = 5
3*4/6 = 6 * x/15
solve for x = 5
Bunuel
A car garage employs 3 mechanics. Three mechanics are able to fully service 6 cars in 4 hours. If the car garage doubled its number of mechanics, how long would it take for the garage to fully service 15 cars?
A. 5 hours
B. 4 hours
C. 6 hours
D. 6.5 hours
E. 8 hours
A. 5 hours
B. 4 hours
C. 6 hours
D. 6.5 hours
E. 8 hours
