Q33) A sum of Rs.18,000 was lent under simple interest partly at 15% p.a. and partly at 20% p.a for one of year. If the total interest earned is Rs.3,330, what is the ratio of amounts invested at the two different rates?

(a) 4 : 5

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(b) 3 : 4

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(d) 3 : 7

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Solution

The correct option is D (d) 3 : 7
Ans:33)(d)Sol: Shortcut 1:
Going from the given options, option (d) gives the interest of 3330;
Expl:- Let, Sum lent on 15% interest = x;
x(15/100) + (18000-x) (20/100) = 3330;
x=5400;
Ratio = 5400:12600 = 3:7;

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Q33) A sum of Rs.18,000 was lent under simple interest partly at 15% p.a. and partly at 20% p.a for one of year. If the total interest earned is Rs.3,330, what is the ratio of amounts invested at the two different rates?

The correct option is D (d) 3 : 7Ans:33)(d)Sol: Shortcut 1: Going from the given options, option (d) gives the interest of 3330; Expl:- Let, Sum lent on 15% interest = x; x(15/100) + (18000-x) (20/100) = 3330; x=5400; Ratio = 5400:12600 = 3:7;

The correct option is D (d) 3 : 7
Ans:33)(d)Sol: Shortcut 1:
Going from the given options, option (d) gives the interest of 3330;
Expl:- Let, Sum lent on 15% interest = x;
x(15/100) + (18000-x) (20/100) = 3330;
x=5400;
Ratio = 5400:12600 = 3:7;