Fruit salad

The fruit salad is prepared from oranges and bananas. One kilogram of oranges costs 30 CZK, and one kilogram of bananas costs 18 CZK. How many kilograms of bananas need to be added to half a kilogram of oranges to produce a fruit salad worth CZK 21 per 1 kg?

Correct answer:

x =  1.5 kg

Step-by-step explanation:

18x + 30·0.5 = 21·(x+0.5)

18·x + 30·0.5 = 21·(x+0.5)

3x = 4.5

x = 4.5/3 = 1.5

x = 3/2 = 1.5

Our simple equation calculator calculates it.

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Do you have a linear equation or system of equations and are looking for its solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:

Units of physical quantities:

Themes, topics:

Grade of the word problem:

Related math problems and questions: