Let pipe is A and leak is B A A+B 18 30 Let total tank = LCM(18,30) = 90 L 5 : 3 So 1 hr work of leak = 3 - 5 = -2 Therefore, the leak will drain all the water of the tank in 90/2 = 45 hours.
Which of the following number is rational number?
How many Zeros can be formed by multiplying 10×20×30×40×…………….× 100
When N is divided by 5 the remainder is 2. What is the remainder, when n³ is divided by 5?
The sum of three consecutive odd natural numbers each divisible by 3 is 81. Which number is the largest number among the three numbers?
Find the number of zeroes in the product of 20 ×21× 22× ...
In a class, 1/3 of the students are girls and rest are boys. If 3/5 of the girls and 1/5 of the boys are absent, what part of the total number of studen...
What is the smallest four-digit number that can be evenly divided by 20, 24, and 36?
What is the unit digit of 49 15?
A person hired a car for few days. The rent is charged @ Rs 100 per day for first 2 days, Rs 200 per day for next 7 days and Rs 387 per day th...
One-seventh of a 2-digit number is 10 less than half of the number. What is the sum of the digits of the 2-digit number?
