exam Maths Puzzle Numerical Ability

Sally has twice as many times as nickels. The total value is $3.50. How many nickels does she have?

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exam Other Question

Vicky is now 4 times as old as Cristy. five years ago,the sum of their ages was 45. how old are they now 50. ab+b^2/4ab^5 over a+b/6a^2b^4 yah another division problem i do not understand. can you lend some of your wounderful knowledge. thanks