exam Maths Puzzle Numerical Ability

how to solve?

-3(3X+1)<15

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exam Other Question

A backyard has dimensions 1 1/2 yards by 2 4/5 yards. What is the area of the back yard in square yards (yd2)?
these are whole numbers and fractions and the yd the 2 are one of those tiny numbers. The percent of increase is 16%. If the new number is 522, find the original number.