Question
The coins of ₹1, 50 paise, and 10 paise are in the ratio
6:5:9 in a collection. If the total money is ₹376.60, find the number of 10-paise coins.Solution
ATQ,
Let the number of ₹1, 50p, and 10p coins be 6x, 5x and 9x respectively.
ATQ:
(6x × 1) + (5x × 0.50) + (9x × 0.10) = 376.60
Or, 6x + 2.5x + 0.9x = 376.60
Or, 9.4x = 376.60
Or, x = 376.60 / 9.4 = 40
So, number of 10-paise coins = 9x = 9 × 40 = 360
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.
