exam Maths Puzzle Numerical Ability

can you help me in solving this problem:

if one-half of one integer is subtracted from three-fifths of the next consecutive integer, the difference is 3. what are the two integer.

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exam Other Question

an airplane took 2hours to fly 600km against a head wind. The return trip with the wind took 1 2/3 hours. Find the speed of th e plane in still air. Perform the indicated operations:
(x2 – 11x + 4) – (-2x2 + 2x – 6) – (x2 + 6x – 5)