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Math Test 7 Close Subjective Test (i) The question paper contains two sections, section A and section B. (ii) Each question carries 10 marks Section A (i) Section A carries 40 marks. (ii) This section contains four questions. All the questions are compulsory. Question 1(a) ( 3.0 marks) Mrs. Singh has an account in a certain cooperative bank. The following table shows the entries on her passbook. Date Particulars Withdrawal (in Rs) Deposit (in Rs) Balance (in Rs) Jan, 1 09 B/F - - 5600 Jan, 20 To cheque 1500 - 4100 Feb, 14 To cash 1000 - 3100 March, 6 By cheque - 3500 6600 March, 19 To cheque 5400 - 1200 April, 05 By cheque - 2300 3500 April, 10 By cash - 1000 4500 April, 28 To cheque 2000 - 2500 April 30 By cheque - 500 3000 May 14 By cash - 1200 4200 June, 20 To cheque 2800 - 1400 Mrs. Singh earns Rs 63.75 as interest at the end of June 09, where the interest is compounded annually. Find the rate of interest paid by the bank in her savings bank account. Question 1(b) ( 3.0 marks) In a culture, the initial count of bacteria was 90000. It is observed that the count of bacteria is increasing at a constant rate. If the count of bacteria after 3 hours is 119790, then at what rate is the unit of bacteria increasing? Question 1(c) ( 4.0 marks) Question 2(a) ( 4.0 marks)
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