1.In aIT company 60% workers are above 30 years and of these 75% are males and rest are females. if there are 1350 males workers above 30 years , the total number of workers in the IT company is
2.A man saves 20% of his income. Next year, his income increases and so he increases his expenditure by 40% but his percentage savings half of his initial savings. Find the percentage increase in his income.
3.A right circular cone is exactly fitted inside a cube in such a way that the edges of the base of cone are touching the edges of one of the faces of the cube and the vertex is on the opposite face of the cube. If the volume of the cube is 343 c.c, what approximately is the volume of the cone?
(a) 90 c.c
(b) 75 c.c
(c) 80 c.c
(d) 85 c.c
4.A force of 60 men has food for 28 days. 8 days later reinforcements arrive leaving the number of days the food would last to 15 days. What was the strength of the reinforcement?
5.A person spent half of the money he had. Now he finds that he has just as many paise as he had rupees and half as many rupees as he had paise in the beginning. If 10% error is allowed, then what should be your nearest guess about his money in the beginning?
(a) Rs. 50
(b) Rs. 80
(c) Rs. 90
(d) Rs. 100
6.A solid metallic cylinder of base radius 3cm and height 5 cm is melted to make ‘n’ solid cones of height 1 cm and base radius 1mm.find the values of n.
7.A room is16m long,7 m broad and 8 m high. Find the cost of white washing the four walls at Rs 7.5 perm2. White washing is not to be done on the doors and windows, which occupy 65m2.
8.A student took five papers in an examination, where the full marks were the same for each paper. His marks in these papers were in the proportion of 6 : 7 : 8 : 9 : 10. In all papers together, the candidate obtained 60% of the total marks. Then, the number of papers in which he got more than 50% marks is:
9.A person who has certain amount with him goes to market. He can buy 50 orange and 40 mangoes. He retains 10% of the amount for taxi fares and buys 20 mangoes and of the balance, he purchases oranges. Number of oranges he can purchase is:
10.A dishonest retailer cheats his wholesaler and customer both. He purchases 19% more from the wholesaler and sells 15% less while selling to its customer. What is profit percentage by selling the goods at cost price?