21. In the relation x>y+z, x+y>p and z necessarily true?
22. 6 pigs cost the same as 9 sheep. 27 sheep cost the same as 30 goats. 50 goats cost the same as 3 elephants. If two elephants cost $4800, then the cost of one pig in dollar is ?
Answer:
Explanation:9 sheep=6 pigs
27 sheeps=18 pigs=30 goats
So 50 goats=50*18/30=30 pigs=3 elephants
So 2 elephants=20 pigs, cost=4800,cost of one pig=4800/20=240 $
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Reliance Jio Accenture
23. The average age of 30 students is 9 years. If the age of their teacher is included, it becomes 10 years. The age of the teacher (in years) is :
Answer:
Explanation:9=sum of ages of students/30
or, sum of ages of students=270
now, 10=(270+their teacher age)/(30+1)
or, 270+their teacher age=310
or, their teacher age=40 years.
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Reliance Jio Accenture
24. How many squares with sides 1/2 inch long are needed to cover a rectangle that is 4 ft long and 6 ft wide?
Answer:
Explanation:No. of squares required on 4 feet side = 4 x 12 / 0.5 = 96 nos.
No. of squares required on 6 feet size = 6 x 12 / 0.5 = 144 nos.
Total no. of squares required for rectangle of 4 feet x 6 feet = 96 x 144 =13824
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Reliance Jio Accenture
25. If 1 is absent rest of people can be divided into 6 equal parts if 2 is absent rest of them are divided into 7 equal parts ,how many students are present?
Answer:
Explanation:The Total number of students must be 1 more than a 6 multiple and 2 more than a 7 multiple so its 37 which is 35+2 and 36+1
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Reliance Jio Accenture
26. A man driving his bike at 24 kmph reaches his office 5 minutes late. Had he driven 25% faster on an average he would have reached 4 minutes earlier than the scheduled time. How far is his office?
Answer:
Explanation:D is the distance to office And t is Actual time
driving his bike at 24 kmph reaches his office 5 minutes late.
D=(t+5)*24/60
Had he driven 25% faster on an average he would have reached 4 minutes earlier than the scheduled time means
25% more speed means the new Speed is 30kmph
D=(t-4)*30/60.
Solving these two equations, D comes as 18km.
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Reliance Jio Accenture
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