To solve this problem, we need to determine the value of x, which represents the percentage of pink crayons that Mara has.
Let's break down the information given:
Number of crayons Mara has: 40
Number of crayons Luna has: 50
Percentage of pink crayons for Mara: x%
Percentage of pink crayons for Luna: 20%
Total number of pink crayons: 14
We can set up the equation as follows:
(Number of crayons Mara has * Percentage of pink crayons for Mara) + (Number of crayons Luna has * Percentage of pink crayons for Luna) = Total number of pink crayons
(40 * x%) + (50 * 20%) = 14
Let's simplify and solve for x:
(40 * x%) + (50 * 20%) = 14
40x% + 10 = 14
To isolate x, we subtract 10 from both sides of the equation:
40x% + 10 - 10 = 14 - 10
40x% = 4
To solve for x, we divide both sides of the equation by 40:
x% = 4 / 40
x% = 0.1
The value of x is 0.1 or 10%.
#### 10
The answer is: 10
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
Mara has 40 crayons and x percent of her crayons are pink. Luna has 50 crayons and 20 percent of them are pink. Mara and Luna have 14 pink crayons in total.

### Answer:
