For each of the questions, find the value of x. If necessary, round your answer to the nearest tenth. The figure is not drawn to
scale.
please please help! i have attached pictures.
1. a. 8
b. 5
c. 6
d. 10
2. a. 21.9
b. 181.3
c. 24
d. 13.5
3. a. 13
b. 26
c. 77
d. 38.5
please please help! i have attached pictures.
1. a. 8
b. 5
c. 6
d. 10
2. a. 21.9
b. 181.3
c. 24
d. 13.5
3. a. 13
b. 26
c. 77
d. 38.5
1 answer:
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Given:
Total number of coins (Quarters and dimes) = 60
Total amount = $12.45
To find:
The number of quarters and dimes.
Solution:
Let x be the number of quarters and y be the number of dimes.
We know that,
1 quarter = 0.25 dollar
1 dime = 0.10 dollar
Total coins: ...(i)
Total amount: ...(ii)
From (i), we get
...(iii)
Putting this value in (ii), we get
Divide both sides by 0.15.
Putting x=43 in (iii), we get
So, the number of quarters is 43 and the number of dimes is 17.
Therefore, the correct option is b.