For the following questions answer them individually
The marked price of a radio set is Rs. 480. The shopkeeper allows discount of 10% and gains 8%. If no discount is allowed, his gain percent would be
The prices of a school bag and a shoe are in the ratio 7 : 5. The price of school bag is Rs. 200 more than the price of a shoe. Then, the price of a shoe is
A sum of Rs. 300 is divided among P, Q and R in such a way that Q gets Rs. 30 more than P and R gets Rs. 60 more than Q. The ratio of their shares is
The average of nine numbers is 50. The average of the first five numbers is 54 and that of the last three numbers is 52. Then, the sixth number is
The average of the first nine integral multiples of 3 is
An article is sold for Rs. 300 at a profit of 20%. Had it been sold for Rs. 235, the loss percentage would have been
A box has 100 blue balls, 50 red balls and 50 black balls. 25% of blue balls and 50% of red balls are taken away. Then, percentage of black balls at present is
Two cars are moving with speeds $$v1$$ and $$v2$$ towards a crossing along two roads. If their distance from the crossing be 40 m and 50 m at an instant of time, then they do not collide, if their speeds are such that
A certain distance is covered at a certain speed. If half of this distance is covered in double the time, the ratio of the two speeds is
The simple interest on Rs. 4000 in 3 yr at the rate of $$x%$$ per annum equals to the simple interest on Rs. 5000 at the rate of 12% per annum in 2 yr. The value of $$x$$ is
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