81. The ratio of ages of two friends is 3:5 and sum of their ages is 80 years. What are their present ages in years?
Answer: 30,50
Explanation:Ratio of friends = 3:5
3a+5a=80
=> a= 10
so their present age are 30, 50
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Tech Mahindra
82. The angle between two hands at 3.45 is:
Answer: 157 1/2 degree
Explanation:Here is no explanation for this answer
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Tech Mahindra
83. A and B Started a business with Rs.15000 and 12000 respectively. After 6 months B puts Rs.1000 more in his capital while after 8 months A puts Rs.5000 more in his capital. If there is a profit of Rs.35,000 after one year then B will get
Answer: Rs.15,000
Explanation:Ratio of A and B = (15000*8+20,000*4) : (12000*6+1300*6) = 4 :3
B share = 35,000*3/7 = Rs. 15,000
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Tech Mahindra
84. In a row of trees, One tree is fifth from either end of the row. How many tree are in the row?
Answer: 9
Explanation:1 tree should be on 5th position from both the ends.
So, lets fix it first. 1 2 3 4 (5) 4 3 2 1
Total no. of trees= 4 +1+4= 9
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Tech Mahindra
85. John ranks 19th in class and is 36th from the last. How many students are there in the Class?
Answer: 54
Explanation:total students 19+35=54
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Tech Mahindra
86. In a 200 m race, A beats B by 20 m and c by 38m. In a race of 600 m B will beat C by
Answer: 60 m
Explanation:It means, when A covers 200 m,
B covers only (200-20)=180 m
and C covers only (200-38)=162 m
=> When C covers 162 m, B covers 180 m
=> When B covers 600 m, C covers (162/180) * 600 = 540 m
Hence, B beats C by (600-540) = 60 metre
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Tech Mahindra
87. Madhav ranks 17th in a class of 31. What is his rank from the last?
Answer: 15
Explanation:Here is no explanation for this answer
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Tech Mahindra
88. Three partners A,B & C invested total Rs. 1,15,000. After one year one of them gets a profit of Rs.6000, second gets Rs. 10,000 and third gets Rs. 14000 then how much amount did B invested?
Answer: Rs. 38333.3
Explanation:Ratio of their (A:B:c) profit =3:5:7
is thr ratio's of their profits (5/15)*115000 = 38333.3
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Tech Mahindra
89. Number of prime numbers between 30 and 50 is
Answer: 5
Explanation:Here is no explanation for this answer
Workspace
Tech Mahindra
90. What is the difference between compound interest on Rs.3000 for 2 years at 5% P.a. When interest is compounded yearly and compound interest on the same sum and same terms except that it is compounded half yearly?
Answer: Rs.3.93
Explanation:Here is no explanation for this answer
Workspace
Tech Mahindra
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