Combined 81039

Katka has k marbles, Petra has 20 more marbles than Katka, and Lenka has 30 marbles less than Petra and Katka combined. How many marbles do they all have in total?

Correct answer:

x = 4k+10

Step-by-step explanation:

p=20+k l=p+k30=20+k+k30=2k10  x= p+l+k x= 20+k+(p+k30)+k x= 20+k+20+k+k30+k  x=4k+10

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

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

Related math problems and questions: