Question

There are some 10-cent and 20-cent coins in a box. The ratio of the number of
10 cent coins to the number of 20-cent coins is 1:2. The total value of all the coins
in the box is $3. How many 10-cent coins are there in the box?​

Answer 1

Answer:

Number of Coins in a Standard Roll

Denomination Number of Coins Face Value

Penny or 1 Cent 50 $0.50

Nickel or 5 Cents 40 $2.00

Dime or 10 Cents 50 $5.00

Quarter or 25 Cents 40 $10.00

2 more rows•Sep 30, 2020

Answer 2

Answer:

10 coins of 10 cent

Explanation:

1 dollar has 100 cent

so 3 dollar has 300 cent

10 cent and 20 cent are in the ratio of 1:2

so total Ratio is 3. (2+1)

totally 300 cent

300 cent/total Ratio

1 part =100 cent

so,10 cent and 20 cent are in the ratio of 1:2

so,

10 cent ===>1 part ====>1*100 cent =100 cent

20 cent ====>2 part ====>2*100 cent= 200 cent

so,10 cent coin is 10

20 cent coin is 20

totally 30 coins

300 cent