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June 23, 2019

Question 1

3%

4%

5%

6%

None of these

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S.I. = Rs. (15500 ⎯ 12500) = Rs.3000 Rate = [ 100 × 3000 / 12500 × 4 ]% = 6%

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Question 2

Rs. 6400

Rs. 6500

Rs. 7200

Rs. 7500

Let the sum invested in scheme A be Rs. x and that in scheme B be Rs. (13900 ⎯ x) Then, [ x × 14 × 2 / 100] ÷ [{(13,900 - x) × 11 × 2 } / 100] = 3508 28x ⎯ 22x = 350800 ⎯ (13900 × 22) 6x = 45000 x = 7500 So, sum invested in Scheme B = Rs. (13900 ⎯ 7500) = Rs.6400

Question 3

15 years

20 years

40 years

30 years

(b) 20years

Question 4

3.6

6

18

Data inadequate

None of These

Let rate = R% and time = R years Then, [1200 × R × R / 100] = 432 12 r2 = 432 R2 = 36 R = 6

Question 5

Rs 5,000

Rs 10,000

Rs 12,000

Rs 15,000

At 10% CI in 2 years=21 % At 20% Ci in 2 years =44% and 5350 is 107/4% of 20000, by using allegation A B 21 44 107/4 3 1 A=3/4*20000= Rs 15000

Question 6

14 (2/7) %

12.5 %

8 (2/3) %

16 (2/3) %

Sum=353; Amount=512 as many year, put that many root i.e cuberoot(343): cuberoot(512) 7:8 rate=(8-7)/7 *100 =14 (2/7)%

Question 7

11.11%

10%

20%

25%

Sum= A Interest= B A——–A———A ———-B———B ———————B ———————C CI for 3 years=3A+3B+C SI for 3 years =3A Diff= 3B+cCI for 2 years=2A+B SI for 2 years=2A diff=B ratio=(3B+C)/B=31/10 B=10; C=1 Rate=C/B=1/10=10%

Question 8

Rs 4400

Rs 2220

Rs 4320

Rs 4420

Formula= x/(1+R/100)^T x/ (1+20/100)^1 + x/(1+20/100)^2 = 6600 solve and get x=4320

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