exam Maths Puzzle Numerical Ability

Becky has as many dimes as Ryan and Amy have together. Ryan has 2 more dimes than Amy, and Amy has one-third as many dimes as Becky has. How many dimes does each have?

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exam Other Question
Simply the expression

3x(x^5)^2
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6x^3(x^2)^4 i dont know how to do it and i need to know how to do it by hand could you explain it for me thanks alot