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gregori [183]
3 years ago
5

The ratio of the number of men to the number of women on a bus was 2:3 at a bus stop. 4 women got off and the ratio became 4:5.

1 How many men were on the bus? b. How many women were on the bus in the end?
Mathematics
2 answers:
-Dominant- [34]3 years ago
6 0

<u>Answer:</u>

16 men

20 women

<u>Step-by-step explanation:</u>

We are given that the ratio of the number of men to the number of women on a bus was 2:3 at a bus stop.

So assuming x to be the number of persons (male or female), we can write it as:

\frac {2x}{3x}

When 4 women got off the bus, the ratio changed to 4:5.

\frac {2x} {3x-4} = \frac {4} {5}

Solving it to find x:

5(2x)=4(3x-4)

10x=12x-16

2x=16

x=8

So, number of men on the bus = 2(8) = 16

and number of women on the bus at the end = 3(8)-4 = 24-4 = 20

spin [16.1K]3 years ago
4 0

Answer:

At the beginning

16 men and 24 women

In the end

16 men and 20 women

Step-by-step explanation:

Call x the number of men on the bus and call y the number of women on the bus.

We know that the initial ratio between men and women is 2: 3

And the final ratio is 4: 5

So

\frac{x}{y}=\frac{2}{3}\\\\y = \frac{3}{2}x   (1)

After the 4 women are down, the proportion is:

\frac{x}{y-4}=\frac{4}{5}\\\\y-4 = \frac{5}{4}x\\\\y= \frac{5}{4}x +4   (2)

Substitute the value of y in the first equation and solve for x

\frac{5}{4}x +4=\frac{3}{2}x\\\\-\frac{1}{4}x=-4\\\\x=16\ men

Now solve for y.

y = \frac{3}{2}(16)\\\\y=24\ women

Then at the end there were 20 women  (because 4 women got off the bus)

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