exam Maths Puzzle Numerical Ability

The units digit of a two digit number is 1 less than 3 times the tens digit. If the digits are reversed, the new number is 45 more than the original number. Find the number.

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exam Other Question
Find three consecutive integers such that the product of the first integer and the second integer is 42. Solve using the addition principle

x+1/13=9/13

(the 1/13 and 9/13 are fractions)