exam Maths Puzzle Numerical Ability

Use percent notation to name the shaded portion of the drawing:

OK this is my last question that I do not no how to do at all. There is a picture of a square with so many tiny s

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exam Other Question

A solution of 71% pesticide is to be mixed with a solution of 49% pesticide to form 44 liters of a 51% solution. How much of the 71% solution must you use? A number between 300 and 400 is forty times the sum of its digits. The tens digit is 6 more than the units digit. Find the number.