Tapas works twice as fast as Mihir. If both of them together complete a work in 12 days, Tapas alone can complete it in ?
A. 15 days
B. 18 days
C. 20 days
D. 24 days
Answer: Option B
Solution(By Examveda Team)
| Tapas | : | Mihir | |
| Efficiency units/day |
2 | : | 1 |
$$\eqalign{ & {\text{T}} + {\text{M complete in 12 days}} \cr & {\text{Total work }} \cr & = 12 \times \left( {2 + 1} \right) \cr & = 36{\text{units}} \cr} $$
Tapas alone complete the whole work in
$$\eqalign{ & = \frac{{36}}{2} \cr & = 18{\text{ days}} \cr} $$
This Question Belongs to Arithmetic Ability >> Time And Work
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Related Questions on Time and Work
A. 18 days
B. 24 days
C. 30 days
D. 40 days
If Tapas alone takes x days to complete the work, then
=
1
+
1
=
1
x 2x 12
⇒
2 + 1
=
1
2x 12
⇒ 2x = 36
⇒ x = 18 days