Question
Pipe A can fill a tank in 10 hours, while Pipe B can
fill it in 15 hours. Pipe C can empty the tank in 12 hours. If all three pipes are opened together, how long will it take to fill the tank?Solution
1/A + 1/B - 1/C = 1/10 + 1/15 - 1/12 = 1/12. Time = 12 hours. Correct Option: b)
What is the remainder when (x²⁷ + 51) is divided by (x + 1)?
If the sum of two positive numbers is 37 and the difference between these two numbers is 5, then what is the product of the two numbers?
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Find a positive number which when increased by 26 is equal to 120 times the reciprocal of the number?
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Which of the following is a rational number?
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What is the value of 1² + 3² + 5² + 7² + 9² ................ 19²?
The digits of a two-digit number ‘N’ are reversed to form a new number ‘M’. If M < N and N – M = 45, then which of the following maybe ‘N’...
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