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5 votes
The sum of the numbers x, y, and z is 50. The ratio of x to y is 1 : 4, and the ratio of y to z is 4 : 5. What is the value of y?

A. 4
B. 8
C. 10
D. 20

User Rozina
by
7.5k points

2 Answers

4 votes

Answer:

D. 20

Explanation:

x:y:z

1:4:5

1+4+5=10

50÷10=5

1=5

4=?

4=4×5

=20

User Alevtina
by
8.5k points
2 votes

Answer:

x:y:z

1:4

4:5

-------------

1:4:5

-------------

let a:b:c=k:4k:5k

k+4k+5k=50

10k=50

k=5

y=4(5)

=20(D)

User Diaa
by
7.9k points

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