book Maths Puzzle Numerical Ability

I need help on this problem:

Three times the greatest of three consucutive intergers exceeds twice the least by 38. Find the intergers.

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book Other Question

How many pounds of chocolates costing $4.60 per pound may be mixed with 6 lb of chocolates costing $5 per pound to produce a mixture that can be sold for $4.90 per pound? what do you mean by functions?