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46.  Arun divides Rs 4702 among A, B, and C, so that if the amounts being invested at 4% simple interest, the amounts received after 2, 3 and 4 yrs by A, B, and C respectively is equal. Find the share of B?


Rs 1,556
Rs 2,358
Rs 1,237
Rs 1,458


Answer

 Option

4702 will be divided in ratio –
1/[100+rt1] : 1/[100+rt2] : 1/[100+rt3] 1/[100+4*2] : 1/[100+4*3] : 1/[100+4*4] 1/108 : 1/112 : 1/116
= 812 : 783 : 756
So B gets 783/(812+783+756) * 4702 = 1566

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47.  Vithya gave Rs.20000/- to Priya for 5 years and Rs.30000/- to Vijay for 2 years. If the rate of interests is the same and she received Rs.12800- as SI from both. What is the rate of interest?


11%
9%
7%
8%


Answer

 Option

20000*5*R/100 + 30000*2*R/100 = 12800
1600R = 12800
R = 12800/1600 = 8

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48.  192 + 36 × 0.75 − 21 = ?


185
215
198
210


Answer

 Option

198

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49.  What will come in place of the question mark (?) in the following questions? 4571 × 72 = ? × 18 + 3621 × 36?


11,054
11,042
10,000
8,020


Answer

 Option

11,042

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50.  A man lends Rs.20000 in four parts if he gets 8% on Rs.4000, 6(1/2)% on Rs. 8000 and 8(1/2)% on Rs.6000. What percent must he get for the remainder, if his average annual interest is 9.13%?


12.8%
23.8%
13,8%
None of these


Answer

 Option

(4000*8*1)/100 + (8000*13*1)/2*100  +(6000*17*1)/100 + (2000*R*1)/100 =9.13/100 *20000
= 23.8%

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