Question

A mixture of green balls and blue balls, 25% by number of blue balls mass of each blue ball is 40 grams and that of each green ball is 20 grams . find the mass percentage of blue balls

Answer 1

Answer:

the answer is 40%

Explanation:

lets suppose there are 100 balls, then the number of blue balls will be 25.

mass %age of blue balls= mass of blue balls/ total mass * 100

= 25*40/(25*40) + (75*20) *100

= 40%

hope this helped!!