exam Maths Puzzle Numerical Ability

bob makes 20 drinks in five minutes, sarah makes 20 drinks in 10 minutes, and Gary makes 20 drinks in 15 minutes. How long will it take them to make the 20 drinks if they were working together?

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exam Other Question

the sum of 4 consecutive odd integers is 216.
solve the equation to determine the smallest integer. I have a word equation that I am tryng to figure out.

11divided by the sum of (x) and 8 equals quoteint of 7, and the difference of (x) and 8. I am trying to find the (x)

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