50 PTS FOR THIS ONE TOO. AND BRAINLIEST FOR THE FIRST ONE!!!

1. There are 70 dimes and 33 quarters

2. There are 42 dimes and 52 quarters

Step-by-step explanation:

Question 1:

Number of coins: 103

Vaiue of coins = $15.25

Required  

Number of Dimes and Quarters;

Let D =Dimes and Q =Quarters

The total coins is represented as:

----------------- Equation 1

1 dime is equivalent to $0.10 and 1 quarter is equivalent to $0.25; So

-------------------- Equation 2

Make D the subject of formula in equation 1

Substitute 103 - Q for D in equation 2

Open bracket

Subtract 10.3 from both sides

Divide both sides by 0.15

Recall that

Hence, there are 70 dimes and 33 quarters

Question 2:

Number of coins: 94

Vaiue of coins = $17.2

Required  

Number of Dimes and Quarters;

Let D =Dimes and Q =Quarters

The total coins is represented as:

----------------- Equation 1

1 dime is equivalent to $0.10 and 1 quarter is equivalent to $0.25; So

-------------------- Equation 2

Make D the subject of formula in equation 1

Substitute 94 - Q for D in equation 2

Open bracket

Subtract 9.4 from both sides

Divide both sides by 0.15

Recall that

Hence, there are 42 dimes and 52 quarters

Fro the first one there are 70 dimes and 33 quarters for the second one there are 42 dimes and 52 quarters

Step-by-step explanation:

b) 36

step-by-step explanation:

18 times 2 is 36