Sonu invested 10% more than Mona. Mona invested 10% less than Raghu. If the total sum of their investment is Rs. 5,780. How much amount did Raghu invest ?

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BANK PO Exam (Indian Bank) 2010 click here to view all questions

Sonu invested 10% more than Mona. Mona invested 10% less than Raghu. If the total sum of their investment is Rs. 5,780. How much amount did Raghu invest ?

ARs. 2010

BRs. 2000

CRs. 2100

DRs. 2210

Akilesh Kharvi ? Jun 7 '2017 at 21:3

Answer is : Rs. 2000

Explanation:

Let Mona’s investment = Rs.100

Sonu’s investment = Rs. 110 and Raghu’s

investment = \(\frac{100}{90}\times100\) = Rs. \(\frac{1000}{9}\)

Ratio of Mona’s, Sonu’s and Raghu’s investments

= 100 : 110 : \(\frac{1000}{9}\)

= 90 : 99 : 100

Sum of ratios = 90 + 99 + 100 = 289

Raghu’s investment

= Rs.\(\Big(\frac{100}{289}\times5870 \Big)\)

= Rs. 2000

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Answer is : Rs. 2000 Explanation: Let Mona’s investment = Rs.100 Sonu’s investment = Rs. 110 and Raghu’s investment = \(\frac{100}{90}\times100\) = Rs. \(\frac{1000}{9}\) Ratio of Mona’s, Sonu’s and Raghu’s investments = 100 : 110 : \(\frac{1000}{9}\) = 90 : 99 : 100 Sum of ratios = 90 + 99 + 100 = 289 Raghu’s investment = Rs.\(\Big(\frac{100}{289}\times5870 \Big)\) = Rs. 2000 Akilesh Kharvi ? answered Jun 7 '2017 at 21:3 All Comments

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