A piggy bank contains a nickels, dimes and quarters. There are five more dimes than nickels and twice as many quarters as dimes. The total value for the coins is $7.55. How many of each type of coins is in the piggy bank? # of nickels: # of dimes: # of quarters:

34 nickels, 39 dimes, 78 quarters

Step-by-step explanation:

q = quarters, d = dimes, n = nickels

n = d - 5

q = 2d

.25q + .10d + .05n = 7.55

Plug in the first 2 equations into the third one

.5d + .10d + .05(d - 5) = 7.55

Open up the Parenthesis

.5d + .10d + .5d - .25 = 7.55

Combine Like Terms

.2d - .25 = 7.55-->

.2d = 7.8 -->

d = 39 -->

n = 39 - 5 = 34

q = 2(39) = 78

answer: a. 13/44

step-by-step explanation: judging by the information given to us, we are looking for experimental probability. we can see that 13 males have chosen chocolate ice cream. there are 44 ice creams in total (remember that the total is always the denominator). so our answer is 13/44.