Out of 32 persons, 30 invest in National Savings Certificates and 17 invest in shares. What is the number of persons who invest in both?

Mr Trivedi invested 4% of ₹1,00,000 in shares. What amount did he invest in shares?

Sachin invested some amount in National Savings certificates in a specific way. In the first year, he invested Rs 4000, in the second year Rs 6000, in the third year Rs 8000 and so on for 12 years . Find the total amount he invested in 12 years.

Shalmali wanto to invest Rs. 50,000 in saving certificates and PPF. She went to invest at least Rs. 15,000 in saving certificates and at least Rs. 20,000 in PPF. The rate of interest on saving certificates is 8% p.a. and on PPF is 9% p.a. Formulate the LPP for maximun yearly income.

A man wants to invest at most 12000 in savings certificate and N.S.C. He has to invest at leat Rs. 2000 in saving certificate and at least Rs. 4000 in N.S.C. If the rate of interest on saving certificate is 8% per annum and rate of interest on N.S.C. is 10% per annum, how much money he should invest to earn maximum yearly income? Find also the maximum yearly income.

Sachin invested Rs. 5000 for the 1st year, Rs. 7000 for the 2nd year, Rs. 9000 in the 3rd year in National Savings Certificate scheme. How much amount did he invest in 12 yearsgt

A, B and C enter into a partnership. A invests 3 times as much as B and B invests two third of what C invests. At the end of the year, the profit earned is ₨ 6600. What is the share of B?

profit shared by two persons A and B at the end of a year are in the ratio 3:2 . If A's investment is twice that of B's, then what is the ratio of the periods of investments of A and B?

A retired person has Rs 70,000 to invest and two types of bonds are available in the in the market investment. First type of bond yields an annual income of 8% on the amount investment invested and second type of bond yields 10% per annum. As per norms, he has to invest minimum in the first type and not more than 30,000 in the second type. How should investment, so as to get maximum returns, after one year of investment?