a) 7 years b) 8 years c) 9 years d) 10 years correct answer is: c) 9 years Explanation We can do this math using 2 methods – Using log formula:Let,Principal Rate % p.a.Time According to the question,Amount We know,Amount ...
a) ‘A’ ₹106, ‘B’ ₹198, ‘C’ ₹400 and ‘D’ ₹20 b) ‘A’ ₹98, ‘B’ ₹400, ‘C’ ₹20 and ‘D’ ₹106 c) ‘A’ ₹400, ‘B’ ₹20, ‘C’ ₹106 and ‘D’ ₹198 d) ‘A’ ₹98, ‘B’ ₹106, ‘C’ ₹20 and ‘D’ ...
a) ₹ 1580 b) ₹ 2400 c) ₹ 2800 d) none of these. correct answer is: b) ₹ 2400 Explanation Here, ‘Sum’ means ‘Principal’.Rate % or %Time years or yearsSimple interest Let, Principal We ...
a) 1 ¼ years b) 1 ¾ years c) 2 ¼ years d) 2 ¾ years correct answer is: a) 1 ¼ years Explanation Here,Rate %Let, Principal Time yearsAccording to the question,Simple Interest is So that, S.I. ...
a) ₹ 724 b) ₹ 648 c) ₹ 768 d) ₹ 792 correct answer is: c) ₹ 768 Explanation Here,Principal [‘sum’ means ‘principal]Amounts Time yearsWe know, S.I. S.I. S.I. We also know, S.I. ...
a) 18 years b) 20 years c) 22 years d) 24 years correct answer is: c) 22 years Explanation Here,A’s principal A’s Rate % p.a.B’s principal B’s Rate % p.a.Let, Time yearsWe know, Amount Or, Amount ...
a) 10% b) 8% c) 6% d) 12 ½% correct answer is: b) 8% Explanation Actually here ‘Sum’ indicates ‘Principal’Let, Sum Rate % p.a.Time yearsSimple Interest or We know, S.I. According to the question, [cross multiply]% ...