I have 250 balls of two different colours. If red colour balls are 30 more than blue colour balls, then find the balls of each colour.
Given: There are 250 balls of two different colors. If red color balls are 30 more than blue color balls.
To find: We have to find the number of balls of each color.
Solution:
Let number of blue balls = a
So, number of red balls = a $+$ 30
Now, given that total number of balls are 250:
Blue balls $+$ Red balls = 250
a $+$ a $+$ 30 = 250
2a $+$ 30 = 250
2a = 250 $-$ 30
2a = 220
a = $\frac{220}{2}$
a = 110
Therefore,
Number of blue balls = a = 110
Number of red balls = a $+$ 30 = 110 $+$ 30 = 140
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