The ratio of the width to the height of most television screens is 4 to 3. If a television screen is 28 inches wide how tall would the screen be?
A.12
B.15
C.21
D.25
C?
The ratio of girls to boys in Mrs.Hughes classes is 9 to 10. If there are 81 girls in her glasses how many boys are there?
A.2
B.9
C.90
D.120
C?
The ratio of baseball cards to football cards in Jason's collection is 6 to 5. If Jason has 540 baseball cards how may football cards does he have?
A.640
B.450
C.90
D>30
B?
all are correct
The ratio of football players to basketball players at the high school is 12 to 5. If there are 45 basketball players how many football players does the high school have?
A.240
B.180
C.108
D.48
C?
F : B = 12 : 5
= ? : 45
what happened to the 5 in the first ratio? it was multiplied by 9, so we have to multiply the 12 by 9
12:5
= 108 : 45
You are correct again, but please don't tag on a new question in the replies. Post it as a new question.
To find the height of the television screen, we need to use the given ratio of width to height.
The ratio given is 4 to 3, which means that for every 4 units of width, there are 3 units of height.
We are given that the width of the television screen is 28 inches. Since the ratio is 4 to 3, we can set up the following equation:
4 units of width = 28 inches
To find the height, we need to solve for the height in terms of units:
3 units of height = (3/4) * 4 units of width = (3/4) * 28 inches
To solve this equation, we multiply 3/4 by 28:
3 units of height = 21 inches
Therefore, the height of the television screen would be 21 inches.
The correct answer is option C: 21 inches.
Explanation for the second question:
The ratio of girls to boys in Mrs. Hughes classes is 9 to 10. We are given that there are 81 girls. To find the number of boys, we need to use the given ratio.
The ratio is 9 to 10, which means that for every 9 girls, there are 10 boys.
We are given that there are 81 girls. To find the number of boys, we can set up the following equation:
9 girls = 81
To solve for the number of boys, we need to solve for 10 units of boys:
10 boys = (10/9) * 9 girls = (10/9) * 81
To solve this equation, we multiply 10/9 by 81:
10 boys = 90
Therefore, there are 90 boys in Mrs. Hughes' classes.
The correct answer is option C: 90.
Explanation for the third question:
The ratio of baseball cards to football cards in Jason's collection is 6 to 5. We are given that Jason has 540 baseball cards. To find the number of football cards, we need to use the given ratio.
The ratio is 6 to 5, which means that for every 6 baseball cards, there are 5 football cards.
We are given that Jason has 540 baseball cards. To find the number of football cards, we can set up the following equation:
6 baseball cards = 540
To solve for the number of football cards, we need to solve for 5 units of football cards:
5 football cards = (5/6) * 6 baseball cards = (5/6) * 540
To solve this equation, we multiply 5/6 by 540:
5 football cards = 450
Therefore, Jason has 450 football cards.
The correct answer is option B: 450.