1.  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

Option

11,042

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2.  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%

Option

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

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3.  The true discount on a bill of Rs.540 is Rs.90. The banker's discount is?

Rs.60
Rs.108
Rs.110
Rs.112

Option

P.W. = Rs.(540 - 90) = Rs.450. Therefore S.I. on Rs.450 =Rs.90 S.I. on Rs.540 = Rs.(90/450*540) = Rs.108 Therefore B.D. Rs.108

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4.  The SI on a sum of money will be Rs.2500 after 5 years. In the next 5 years Principal is trebled, what will be the total interest at the end of the 10th year?

Rs.15000
None of these
Rs.10000
Rs.20000

Option

Trick: (n+1) * x i.e. (3+1) *2500 N= No. of times it become X= SI

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5.  The present worth of a sum due sometime hence is Rs.576 and the banker's gain is Rs.16. The true discount is?

Rs.36
Rs.72
Rs.48
Rs.96