There are 100 balls in a bag. 0.25 of them are red balls, and the rest are green and blue balls. If there are 1/4 as many green balls as blue balls. How many blue balls are there?
+129852 25 are red
So
green + blue = 75
And there are 4 times as many green balls as blue
So
4B + B = 75
5B = 75
B = 75 /5 = 15 = blue ones
And the number of green ones = 60
+237 There are 100 balls in a bag.
Number of Red Balls = 0.25 * 100
= 25/100 * 100 = 25
Remaining Balls = 100 - 25 = 75
Let there be x blue balls.
Green Balls = 1/4x
x + 1/4x = 75
(4x + x)/4 = 75
5x = 75 * 4
x = (7515 * 4)/5
x = 60
There are 60 blue balls.
