book Maths Puzzle Numerical Ability

Twice the greater of two consecutive odd intgers is 13 less than three times the lesser. Find the integers.

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book Other Question

Robert can drive to work in 45 mins, whereas if he decides to take the bus,the same trip tkaes 1hr 15 min. If the average rate of the bus is 16mi/h slower than his driving rate, ho 2 cos phi multiply csc 2phi = csc phi: prove the identity.