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A buzzer sounds every 15 minutes. If the buzzer sounded at 12:40 pm, which of the following could be a time at which the buzzer had sounded before?

A buzzer sounds every 15 minutes. If the buzzer sounded at 12:40 pm, which of the following could be a time at which the buzzer had sounded before? Correct Answer 8:10 AM

Parki beach is situated in Gahira, Anwara thana under southern Chittagong region. The beach lies about 28 km. away from Chittagong city. As the beach is situated at the Karnaphuli river channel, visitors can view both the Karnaphuli river and the sea together.

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A buzzer sounds every 15 minutes If the buzzer sounded at 12:40 which of the following could be a time at which the buzzer sounded?
Given below are three quantities named A, B and C. Based on the given information; you have to determine the relationship between the two quantities. You should use the given data and your knowledge of Mathematics to choose between the possible answers. The options represent the relations between these three quantities A) > B) < C) = D) ≤ E) ≥ Two pipes P and Q can fill an empty tank in 20 minutes and 30 minutes respectively. Quantity A: If both pipes are opened simultaneously, then after what certain time P should be closed so that further time after which the tank is filled in 15 minutes? Quantity B: If both are opened and P is closed after 8 minutes, how much further time would it take for Q to fill the bucket? Quantity C: Pipe A and B can fill a tank in 15 minutes and 10 minutes respectively. Pipe C can empty the tank in 5 minutes. Pipe A and B are opened simultaneously and after the 4-minute pipe, C is also opened. In what time the tank will be emptied?
The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph. P: Individuals with APD do not recognise subtle differences between sounds in words, even when the sounds are loud and clear enough to be heard.  Q: Central Auditory Processing Disorder, this is a condition that adversely affects how sound that travels unimpeded through the ear is processed or interpreted by the brain. R: They can also find it difficult to tell where sounds are coming from, to make sense of the order of sounds, or to block out background noises. S: People with APD may process thoughts and ideas slowly and have difficulty explaining them. It is important to realize that learning disabilities can affect an individual’s life beyond academics
5 taps are connected to a tank among which 3 taps (A, B and C) are inlet taps and 2 taps (P and Q) are outlet taps. A, B and C can fill the tank in 24 minutes, 30 minutes and 36 minutes respectively while taps P and Q can empty the tanks in 15 minutes and 45 minutes respectively. If tap B is opened after 5 minutes and tap P is opened 5 minutes after tap B, find the time taken to fill the tank completely.
A bus runs at 80 km per hour and reaches its destination 40 minutes late. If it had moved at a speed of 90 kilometers per hour, it would have reached only 8 minutes late. The right time in which the bus completes it's journey is: A. 248 minutes B. 340 minutes C. 212 minutes D. 315 minutes
If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth ? 1. GPS and navigation systems could fail. 2. Tsunamis could occur at equatorial regions. 3. Power grids could be damaged. 4. Intense auroras could occur over much of the Earth. 5. Forest fires could take place over much of the planet. 6. Orbits of the satellites could be disturbed. 7. Shortwave radio communication of the aircraft flying over polar regions could be interrupted. Select the correct answer using the code given below:
Five pipes P, Q, R, S, and T can fill a tank in 60 minutes, 20 minutes, 30 minutes, 8 minutes, 32 minutes respectively. Out of these five pipes, two have now been converted into emptying pipes such that their efficiency remains the same. When only one of the filling pipes and one of the emptying pipes operate, the tank can be filled in 60 minutes while another combination of emptying and filling pipe empties it in 8/45th of the time taken by the previous combination to fill the tank. Which pipes are converted into emptying pipes?
Five friends decided to go for a race. The average time they completed the race was 64 minutes. The last finisher took 50 minutes more than the third finisher. The average time of the top two finishers was 40 minutes. The fourth finisher the race in 1 hour 20 minutes. Find the time (in minutes) in which the last finisher finished the race. 
A bell rings every 18 minutes. A second bell rings every 24 minutes. A third bell rings every 32 minutes. If all the three bells ring at the same time at 8 o’clock in the morning, at what other time will they all ring together ?
In a tank, 2 inlets and 1 outlet pipe are connected. Inlet pipe can fill the tank in 15 minutes and 20 minutes respectively while the outlet pipe can empty the tank in 5 minutes. If each pipe is opened after every 5 minutes starting with inlet pipe at 3: 00 pm which can fill the tank in 15 minutes and in the last outlet pipe is opened, then at what time tank will be emptied?