exam Maths Puzzle Numerical Ability

evaluating indices (216/27) to the power of -2/3

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exam Other Question

alyssa can sew 100 baby dresses in 4 weeks. Alyssa had already finished 25 when MAe joined her. If 200 baby dresses were sewed 2 and 1/3 weeks after MAe joined Alyssa, how many baby dresses can Mae sew in a week? how do you solve these kinds of problems