Question

A student makes a $10.50 purchase at the bookstore with a $20 bill the store has no bills and gives the change in quarters and fifty-cent pieces there are 30coins in all how many of each kind are there?

Answer 1

Harkirat I did not see the answer

Answer 2

Pls clear for me
1$ = 100 cents
quarter = 25 cents ??
Correct???

Answer 3

yes

Answer 4

Ok so i giv th sol now...

Answer 5

the amount that the store has to return is $9.50 i.e 950 cents

Let the number of quarters i.e. 25 cent coins be = x
Then number of 50 cent coins = (30 -x) [since total no of coins is 30]

Value of x coins of 25 cents = 25x cents
value of (30-x) coins of 50 cents = 50 (30-x) = (1500 -50x)

ATQ, 25x + (1500 -50x) = 950
-25x + 1500 = 950
-25x = 950 - 1500
x = -550/-25
x = 22

So number of quarter coins is 22 and
number of 50 cent coins is (30-22) = 8

Clear???

Answer 6

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