I have 2 coins. x of them are 2 rand coins. How much, in terms of x are these 20 coins worth?

I have 20 coins. x of them are 2 rand coins and the rest are 5 rand coins. How much, in terms of x are these coins worth?

1. 5x+2(x-20)rand

2. 2x+5(20-x)rand

3. 2x+5(x-20)rand

4. (2x+5x)(20-x)rand
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1 Answer

The worth of the 2 rand coins is 2x. There 20-x other coins (5 rand), worth 5(20-x), so the total worth is 2x+5(20-x) rand (answer 2).

by Top Rated User (1.2m points)

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