Explanation

To find the ratio, divide the number of red cars by the number of green cars:

42 (red) ÷ 14 (green) = 3

So, for every 1 green car, 3 red cars were sold. Hence, the ratio is 3:1.

Explanation

To find the number, first, find the difference in the ratio:

9 - 7 = 2

Now, divide 224 by 7 and multiply by 9:

(224 ÷ 7) × 9 = 288

Explanation

Explanation

Explanation

Explanation

Let the two numbers be $x$ and $y$, where $x > y$.

We are given:

$$x+y=40\text{(1)}$$$$x - y = 4 quad text{(2)}$$

Adding equations (1) and (2):

2x=44⟹x=22

Subtracting equation (2) from (1)

$$2y = 36 implies y = 18$$

The numbers are 22 and 18.
The ratio of the numbers is:

x​/y=22​/18

=11/9​

Explanation

Initially, the milkman has 10 liters of milk and adds 10 liters of water, making the total solution 20 liters (10 milk + 10 water).

The ratio of milk to water is 1:1, so the concentration of milk is 50% (10 liters milk / 20 liters total).

The son takes 15 liters of this solution, which contains 50% milk, so he takes 7.5 liters of milk (15 liters x 0.5) and 7.5 liters of water.

The son then adds 5 liters of water to the 15 liters he took, making the total solution 20 liters again (7.5 milk + 7.5 water + 5 water).

Now, the total water in the solution is 7.5 liters (initial water) + 5 liters (added water) = 12.5 liters.

So, the amount of water in the milk is 12.5 liters.

Explanation

Initial ratio: Boys:Girls = 8:5

After 22 more girls join:

Boys = 8x, Girls = 5x + 22 (where x is a constant)

Total students = 286 + 22 = 308

8x + 5x + 22 = 308

13x = 286

x = 22

Boys = 8x = 176

Girls = 5x + 22 = 132

New ratio = Boys:Girls = 176:132 = 4:3 (after simplification)

Explanation

The ratio of Ali's amount to Asim's amount is:

$$text{Ratio} = frac{20}{16} = frac{5}{4}$$

So, the correct ratio is 5:4.

Explanation

Convert feet to inches and simplify 8/84​=2:21.