Question

You have r rare coins, consisting of p pennies and n nickels.

a. p is 20% of 190. How many pennies do you have?
b. 190 is 200% of r. How many rare coins do you have?
c. n is 60% of r. How many nickels do you have?
Please help!!

Answer 1

9514 1404 393

Answer:

a. 38

b. 95

c. 57

Explanation:

In this context, you can consider "of" to mean "times." It can also be helpful to think of % as meaning /100.

a. p = 20% × 190

p = 20/100 × 190 = 38 . . . . you have 38 pennies

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b. 190 = 200% × r

190 = 200/100 × r . . . . replace % with /100

190 = 2 × r . . . . . . . . . simplify the fraction

190/2 = r = 95 . . . . you have 95 rare coins

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c. n = 60% × r

n = 60/100 × 95 = 57 . . . . you have 57 nickels