book Maths Puzzle Numerical Ability

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In a right triangle, one acute angle is 54degree more than twice the other. Find each acute angle.

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book Other Question

The amount A in an account after t years of an initial principle P
invested at an annual rate r compounded continuously is given by A
= Pe^rt where r is expressed as a decimal. W
A researcher orders a broth of 41.6% glucose for his lab. However, he needs a stronger broth, one that is 52.5% glucose. Fortunately, he has 83.2 liters of 64.2% glucose broth in