exam Maths Puzzle Numerical Ability

How long will it take workers A and B, together, to finish a job which can be done by A alone in 6 days, by B alone in 4 days?

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exam Other Question

the sbc bookstore sold 348 notebooks during the first day of school, some at P 22.50 each and the rest at P 34.20 each. the total amount taken in for the notebooks was taken in for Please Help!

Solve the inequality 7< 4x + 3 ? 21

What is the question Mark stand for?