One alloy of metal contains 90% copper and 10% tin. Another alloy contains 93% copper and 4% tin. Later they are mixed, so that the mixture may contain 9% of tin. What per cent of copper will it contain?
1. 75.5%
2. 80.5%
3. 85.5%
4. 90.5%
5. None of these
In a survey of 200 students of a higher secondary school, it was found that 120 studied Mathematics; 90 studied Physics; 70 studied Chemistry; 40 studied Mathematics and Physics; 30 studied Physics and Chemistry; 50 studied Chemistry and Mathematics, and 20 studied none of these subjects. Find the number of students who studied all the three subjects.
1. 10
2. 20
3. 40
4. 120
5. None of these
Which section of General Awareness do u like the most?
From a point outside a circle of radius 15 cm, two tangents are drawn to the circle. The angle between the tangents is 74°. Find the area of the triangle formed by the tangents and the chord joining the points of contact. (sin37° = 0.6)
384 cm2
96 cm2
192 cm2
225 cm2
three men, four women and nine boys can do a piece of work in 28 days. Two men, three women and seven boys can do the same work in 40 days. In how many days can two men, one woman and one boy do the same work?
48
42
56
Cannot be determined
Some questions on GK please...
Ram has to weigh 6 distinct packets.He weighs them 4 at a time,weighing all the possible combinations of the packets from the six.The average weight of all the weighing combinations is found to be 500 gm. What is the combined weight of all the six packets?
The distance between two towns A and B is 240 km. Two buses start from these towns towards each other. They can meet halfway if the first bus leaves 1 hour earlier than the second. If they start simultaneously, they will meet in 4/3 hours. Find the speeds of the buses.
360,60
60,360
60,120
120,60
Two men and a woman are entrusted with a task. The second man needs three hours more to cope with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as the second man and the woman working together. The first man, working alone, would spend eight hrs less than the double period of time the second man would spend working alone. how much time would the two men and the woman need to complete the task if they all worked together?
1 hr
2 hrs
3 hrs
4 hrs
A dam has four inlets. Through the first three inlets, the dam can be filled in 12 mins. Through the second, the third and the fourth inlet,it can be filled in 15 mins; and through the first and the fourth inlet, in 20 mins . how much time will it take all the four inlets to fill up the dam?
5 mins
10 mins
15 mins
20 mins
A,B and C working together completed a job in 10 days.However, C only worked for the first three days when 37/100 of the job was done. Also, the work done by A in 5 days is equal to the work done by B in 4 days. How many days would be required by the fastest worker to complete the entire work?
15
20
25
30
Two pipes A and B can fill up a half full tank in 1.2 hrs. The tank was initially empty. Pipe B was kept open for half the time required by pipe A to fill the tank by itself. Then, pipe A was kept open for as much time as was required by pipe B to fill up 1/3 of the tank by itself. It was then found that the tank was 5/6 full. The least time in which any of the pipes can fill the tank fully is
3
4
4.8
6
A tank of 3600 cu m capacity is being filled with water. The delivery of the pump discharging the tank is 20% more than the deilvery of the pump filling the same tank. Twelve mins more time is needed to fill the tank than to discharge it. Determine the delivery of the pump filling the tank in cu m/min
36
50
60
72
x(3-2/x)=3/x find x^2+ 1/x^2
0 voters
8. Snowy saves RS 12 of her Income. Her Income is increased by 34% and she still saves RS 12 of increased income. Find the percentage increase in her expenditure?
1. 40
2. 41
3. 42
4. 43
5. none
Ashish, Binay and Joseph can do a job in 20, 30 and 40 days respectively. The three started the job together; Ashish left the job 4 days before it was completed and Binay left the job 3 days before it was completed. In how many days was the job completed?
a) 14
b) 12
c) 16
d) 15
In the country of Four, there are four cities, A, B, C
and D. B is to the East of A, C is to the South of B,
D is to the West of C, and A is to the North of D.
The Government of Four is planning to connect
these four cities by road such that it is possible for
a person to go from a city to any of the other three
cities. At the same time, the Government wants to
ensure that the total road length is minimum. The
distances between A to B, B to C, C to D and D to
A are all equal to 10 km. What should be the total
length of the road?
A. 26.64 km
B. 27.32 km
C. 28.30 km
D. 30 km
E. 36 km
A company makes toy cars at a production cost of Rs 17.50 per unit. A market survey reveals that 10% of the product will be lost, 5% will be rejected, 5% will decay and 5% will be stolen. At what unit price must the company sell it to realize 28% profit?
The weight of an empty bucket is 25% of the weight of the bucket when filled with some liquid. Some of the liquid has been removed. Then, the bucket, along with the remaining liquid, weighed three-fifth of the original weight. What fractional part of the liquid has been removed?
2/5
8/15
7/13
5/8