exam Maths Puzzle Numerical Ability

eleanor can complete two skirts in 15 days. how long will it take her to complete eight skirts

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exam Other Question

graph x + 2y< 3 with a line under the sign
2x-3y < 6 with a line under the sign please help me
thank you in advance In two dimensions, the determinant of an ordered group of numbers a, b, c, and d is defined as: ad - bc. Compute the determinant when a, b, c, and d equal 3, -2, 9 and 4 respectively.