| Color | Light : Dark | |---|:---:| | Red | 3 : 4 | | Blue | 5 : 3 | | Green | 1 : 3 | | Pink | 1 : 7 | | Yellow | 9 : 5 | | Orange | 7 : 9 | In a box, there are several balls. The pie-chart shows the percentage-wise distribution of 5 different colours of balls; and total number of balls = 1000. Also, the ratio of the light and dark shades of the six colours of balls is given.
Solution
✅ Correct Option: 1
For Red balls: Total percentage is 21% Total red balls = $0.21 \times 1000 = 210$ balls Ratio of light:dark red = $3:4$ Total parts for red = $3 + 4 = 7$ parts Light red balls = $\frac{3}{7} \times 210 = 90$ balls For Yellow balls: Total percentage is 21% Total yellow balls = $0.21 \times 1000 = 210$ balls Ratio of light:dark yellow = $9:5$ Total parts for yellow = $9 + 5 = 14$ parts Dark yellow balls = $\frac{5}{14} \times 210 = 75$ balls Therefore, difference between light red and dark yellow balls = $90 - 75 = 15$ balls