Question
The ratio of green to yellow balls in a basket is 5:7. If
15 balls of each color are added, the ratio becomes 2:3. How many yellow balls were originally there?Solution
ATQ,
Let the number of green and yellow balls originally be 5x and 7x respectively.
ATQ:
(5x + 15)/(7x + 15) = 2/3
⇒ 3(5x + 15) = 2(7x + 15)
⇒ 15x + 45 = 14x + 30
⇒ x = 15
So, original yellow balls = 7 × 15 = 105
More Probability Questions
13.99% of 299.99 ÷ 7.17 = ? ÷ 16.15
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
2 (1/4)% of 7999.58 + {49.06% of 898.87} + √143.14 – 19.99% of 1499.63 - (52 - 41) = ?
√1024.21 × √624.89 ÷ 4.98 + 11.99 × 4.01 = ?
?% of 1200.22 + 319.82 = 3.99 × 295.64
? 2 + (39.99 × 10.99 + 7.01) - (39.99 × 2.99 2 + 21.99) = 21.99 × 23.01
510.11 ÷ 16.98 × 5.14 – 119.9 = √?
Solve the given equation for ?. Find the approximate value.
(35.86 × 15.14) ÷ 9 + √(288.89) × 4.03 = ?
...24.75% of 20.125% of 30.05% of 2196.06 = ?
? + 163.99 – 103.01 = 24.01 × 6.98
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