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n + 5 = 18 n = 13
A nickel is worth 5 cents so if you have N nickels their value in cents is 5*N
5
5% equals 5/100, or 1/20. So 5 percent of 4000 is 4000/20 = 200
4000 times 5 equals 20,000. This is calculated by multiplying 4000 by 5, which can be done by simply adding 4000 five times or using multiplication.