31A sum of Rs. 17,000 earns a simple interest of Rs. 3,400 in 2 years. What is the rate of interest per annum?A10%B2%C9%D12%View AnswerDiscussWorkspaceReportSaveEasy
32What is the simple interest on Rs. 18,000 at 15% per annum for 4 years?ARs. 28,800BRs. 2,700CRs. 10,800DRs. 13,500View AnswerDiscussWorkspaceReportSaveEasy
33A sum of Rs. 8,000 becomes 4 times itself in 5 years at simple interest. What is the rate of interest?A47.5%B30%C60%D80%View AnswerDiscussWorkspaceReportSaveMedium
34At 6% per annum simple interest, what principal yields Rs. 720 as interest in 4 years?ARs. 6,000BRs. 3,000CRs. 4,320DRs. 12,000View AnswerDiscussWorkspaceReportSaveEasy
35In how many years will a sum of money double itself at 5% per annum simple interest?A20 yearsB10 yearsC40 yearsD28 yearsView AnswerDiscussWorkspaceReportSaveEasy