Question
A man donated 10%, 20% and 15% of his income to three
NGOs ‘A’, ‘B’ and ‘C’, respectively. They spent 75%, 80% and 50% of respective sums received by them. If total sum left with three NGOs is Rs. 5100, then find the income of man.Solution
Let the income of the man be Rs. x Therefore, sum donated to NGO ‘A’ = Rs. 0.10x Sum left with NGO ‘A’ = 0.25 × 0.10x = Rs. 0.025x Sum donated to NGO ‘B’ = Rs. 0.20x Sum left with NGO ‘B’ = 0.2 × 0.20x = Rs. 0.06x Sum donated to NGO ‘C’ = Rs. 0.15x Sum left with NGO ‘C’ = 0.5 × 0.15x = Rs. 0.075x According to the question, 0.025x + 0.06x + 0.075x = 5100 Or, 0.16x = 5100 Or, x = 5100/0.16 = 31875 Therefore, income of man = Rs. 31875
To find the Next number in the given series.
6 9 13 19 29 47 ?
...3 4.5 6.75 10.125 15.1875 22.78125 ?
...55 46 60 41 65 36 ?
If the first term of the arithmetic progression is 18, the common difference is 5, and the number of terms in the series are 40, then find the sum of th...
14 15 34 116 460 2325
...9 16 56 318 2424 25070
...200 ? 96 38.4 7.68 0
...4096 2048 514 64 4
...Select the option in which the numbers are related in the same way as are the numbers of the following set.
(25, 18, 225)
130 136 148 166 ? 232
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