Mathematics & Logic
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661
A and B can complete a work in 10 and 15 days respectively. In how many days can they finish it together?
Medium
Mathematics & Logic
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662
A vendor bought toffees at 6 for a rupee. How many for a rupee must he sell to gain 20%?
Hard
Mathematics & Logic
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663
If 20% of a number is 120, then 120% of that number will be:
Medium
Mathematics & Logic
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664
A boat travels 12 km upstream in 4 hours and 20 km downstream in 2 hours. What is the speed of the boat in still water?
Hard
Mathematics & Logic
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665
A shopkeeper gives a discount of 10% on a TV whose marked price is ₹20,000. What is the selling price?
Easy
Mathematics & Logic
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666
The sum of the internal angles of a triangle is:
Easy
Mathematics & Logic
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667
A sum of ₹12,500 is divided among A, B, and C in the ratio 2:3:5. What is the share of C?
Medium
Mathematics & Logic
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668
A 180m long train crosses a bridge 270m long in 30 seconds. What is the speed of the train?
Medium
Mathematics & Logic
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669
In a class, the ratio of boys to girls is 4:5. If there are 20 boys, how many girls are there?
Easy
Mathematics & Logic
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670
The average age of a class of 30 students is 15 years. If the teacher's age is included, the average increases by 1 year. Find the teacher's age.
Medium
Mathematics & Logic
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671
If a certain sum amounts to ₹12,100 in 2 years at 10% compound interest compounded annually, what is the principal sum?
Medium
Mathematics & Logic
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672
If A:B = 2:3 and B:C = 4:5, find A:B:C.
Medium
Mathematics & Logic
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673
A sum of ₹2,500 is lent at 6% simple interest per annum. What will be the amount after 3 years?
Easy
Mathematics & Logic
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674
The average of seven numbers is 18. If one more number is added, the average becomes 20. Find the eighth number.
Medium
Mathematics & Logic
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675
If the sum of two numbers is 55 and the H.C.F. and L.C.M. of these numbers are 5 and 120 respectively, then the sum of the reciprocals of the numbers is:
Hard
Mathematics & Logic
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