Pipes A and pipe B can fill a tank at rate of 30 m 3/hr and 40 m 3/hr respectively. Together they fill the tank in 4 hours. Find the volume of the tank.
280 m 3
To find the volume of the tank, we can calculate the combined rate at which both pipes fill the tank together per hour.
Step 1: Find the combined rate of both pipes
Rate of Pipe A = \(30\text{ m}^3/\text{hr}\)
Rate of Pipe B = \(40\text{ m}^3/\text{hr}\)
\[\text{Combined Rate} = 30\text{ m}^3/\text{hr} + 40\text{ m}^3/\text{hr} = 70\text{ m}^3/\text{hr}\]
Step 2: Calculate the total volume of the tank
Since they take \(4\text{ hours}\) to completely fill the tank together, the volume is:
\[\text{Volume} = \text{Combined Rate} \times \text{Time}\]
\[\text{Volume} = 70\text{ m}^3/\text{hr} \times 4\text{ hours} = 280\text{ m}^3\]
Therefore, the volume of the tank is \(280\text{ m}^3\).
Correct Answer: Option 2 (\(280\text{ m}^3\))
Thirty men can do a piece of work in 16 days working 8 hrs a day. How many men are needed to complete another work, which is twice the first one, in 10 days working 12 hrs a day?
The following are the steps involved in solving the above problem. Arrange them in sequential order.
A) M 2 = \(\rm\frac{30 \times 16 \times 8 \times 2x}{x \times 12 \times 10}\)
B) \(\rm\frac{30 \times 16 \times 8}{x}=\frac{M_2 \times 12 \times 10}{2 x}\)
C) \(\rm\frac{M_1 D_1 H_1}{ W_1}=\frac{M_2 D_2 H_2}{W_2}\)
D) M 2 = 64
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Two men and 7 women can complete a work in 28 days, whereas 6 men and 16 women can do the same work in 11 days. In how many days will 5 men and 4 women, working together, complete the same work?
A man and a woman, working together can do a work in 66 days. The ratio of their working efficiencies is 3 ∶ 2. In how many days 6 men and 2 women together can do the same work?
Each one of five men independently can complete a work in 20 days. The work is started by one person. Next day one more person joins and every next day one more person joins. From the fifth day, five persons continued working as a team. In how many days, will the work be completed?
Numan does half the work as Gagan in 4/5 of the time. If together they take 16 days to complete a piece of work, then how long will it take Gagan to complete the work?