For the following questions answer them individually
The radius of the base and the height of a right circular cone are doubled. The volume of the cone will be
The ratio of weights of two spheres of different materials is 8 : 17 and the ratio of weights per 1 cc of materials of each is 289 : 64. The ratio of radii of the two spheres is
A shopkeeper buys an article for 360. He wants to make a gain of 25% on it after a discount of 10%. The marked price is
A is to pay B, 600 after 4 years time at 10% per annum interest rate compounding annually. A offers to pay up B at present. What discount percent should B allow A ?
A shopkeeper sold an item for r1510 after giving a discount of 24 1/2% and thereby incurred a loss of 10%. Had he sold the iterm without discount, his net profit would have been
3,000 is divided between A, B and C, so that A receives 1/3 as much as B and C together receive and B receives 2/3 as much as A and C together receive. Then the share of C is
The least number which must be added to the greatest number of 4 digits in order that the sum may be exactly divisible by 307 is
A cistern is provided with two pipes A and B. A can fill it in 20 minutes and B can empty it in 30 minutes. If A and B be kept open alternately for one minute each,with starting from pipe A, how soon will the cistern be filled ?
If 40 men or 60 women or 80 children can do a piece of work in 6 months, then 10 men, 10 women and 10 children together do half of the work in