Question
Present ages of 'A' and 'B' are in the ratio 11:7,
respectively. Present age of 'C' is 120% more than 'B'. If the difference between present ages of 'C' and 'A' is 22 years, then find the present age of 'B'.Solution
Let the present age of 'A' be '11x' years So, present age of 'B' = 11x × (7/11) = '7x' years So, present age of 'C' = 7x × 2.2 = '15.4x' years ATQ; 15.4x - 11x = 22 Or, 4.4x = 22 So, x = 5 So, present age of 'B' = 7x = 5 × 7 = 35 years
42, 54, 78, 114, 168, 222
What will be come in place of (?) in the given number series.
2, 6, 18, 54, ?, 486The median of the following distribution is:
The ratio of Pawan's income to Qureshi's income is 6:5. Pawan spends 75% of his income, while Qureshi saves 24% of his income. What percentage of Pawan'...
142.07 + 21.89 – (128.12 ÷ 7.81 – 12.09 × 6.98) = ?
A line with slope m touches the parabola y ² = 4ax. The equation of the tangent is:
A man spends 35% of his income on food, 25% on rent, and the remaining amount on other expenses. If he saves ₹9,000, which is 20% of his income, find ...
A man invests ₹20,000 in a scheme that offers a 10% simple interest per annum. After how many years will his total amount become ₹30,000?
24, 13, ?, 29, 117, 937
If cos A = 4/5 and A is an acute angle, find the value of 3 tan A + 4 sec A.