Question
A bag contains 10-paisa, 20-paisa and 50-paisa coins in
the ratio of 9:7:5, respectively. If the total amount in the bag is Rs. 48, then find 40% of the number of 20-paisa coins in the bag.Solution
Let number of 10 paisa, 20 paisa and 50 paisa coins be ‘9x’, ‘7x’ and ‘5x’, respectively. ATQ, (0.1 × 9x) + (0.2 × 7x) + (0.5 × 5x) = 48 Or, 0.9x + 1.4x + 2.5x = 48 Or, 4.8x = 48 So, x = 10 So, number of 20 paisa coins = 7x = 70 Therefore, required number of coins = 0.40 × 70 = 28
What will come in the place of questions (?) mark in the following questions.
53, 55, 61, 71, 85, ?
√(10198 )× √(7220 )÷ 16.69 + 2010.375= ?
7, 7, 14, 40, ?, 227
24, 42, 60, ?, 96, 114
196, 196, 203, 229, 292, ?
500, 250, 750, 375, 1125, 562.5, ?
22, 37, 63, 98, 148, ?
What will come in the place of questions (?) mark in the following questions.
1204, 1218, ? , 1267, 1302, 1344
- What will come in place of the question mark (?) in the following series?
13, 15, 18, 23, 30, ? What will come in place of the question mark (?) in the following series?
325, 292, 262, 229, ?, 166
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