exam Maths Puzzle Numerical Ability

Bob can fill the pool in 15 minutes. Fred can fill the pool in 10 minutes. How long will it take Bob and Fred to fill the pool together?

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exam Other Question

You observe the gender of the next 100 babies born at a local hospital. You count the number of girls born. Identify the n, p, and q, and list the possible values of the random variable x. how do you find the area of 3/4 of a circle