Mathmetics

ISBT Mathmetics for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

Q231.

Directions : In each of the following questions are followed by two statements I and II. Read the question from  both the statements and then decide wheather the  question can be answered with it. Give answer ? 1) Only I 2) Only II 3) Both I & II 4) Either I or II 5) Both I & II are not sufficient to answer the question. What is the height of a right - angled triangle ? I. The side of the square is 8 cm. II. The area of the right-angled triangles is half of the area of a square.

1)	1	2)	2
3)	3	4)	4
5)	5

Q232.

A and B are two different alloys of gold and copper prepared by mixing metals in the proportion 7 : 2 and 7 : 11 respectively. If equal quantities of the alloys are melted to form a third alloys C, find the ratio of gold and copper in C ?

1)	5 : 7	2)	3 : 7
3)	7 : 5	4)	7 : 8
5)	None of these

Q233.

729 ml of a mixture contains milk and water in the ratio 7:2. How much more water is to be added to get a new mixture containing milk and water in the ratio of 7:3  ?

1)	72 litres.	2)	81 litres
3)	121 litres	4)	144 litres
5)	None of these

Q234.

If two alloys contain zinc and copper in the ratio of 2 : 1 and 4 :1. In what ratio the two alloys should be added together to get as new alloy having zinc and copper in the ratio of  3:1 ?

1)	3 : 5	2)	5 : 7
3)	5 : 3	4)	7 : 5
5)	None of these

Q235.

An amount of money is to be distributed among P, Q and R in the ratio 5 : 8 : 12, respectively.If the total share of Q and R is four times that of P, what is definitely P's share ?

1)	Rs. 4000	2)	Rs. 4800
3)	Rs. 5000	4)	Can't be determined
5)	None of these

Q236.

A mixture contains alcohol and water in the ratio of 6:1. On adding 8 litres of water, the ratio of alcohol to water becomes 6:5. Find the quantity of water in the mixture.

1)	1 litres	2)	2 litres
3)	3 litres	4)	4 litres
5)	Non e of these

Q237.

On a test consisting 150 questions carrying 1 mark each. A student answered 80% of the first 75 questions correctly. What per cent of the other 75 questions does the student  need to answer correctly to score 60% on the entire exam ?

1)	24%	2)	30%
3)	40%	4)	45%
5)	None of these

Q238.

The length of a rectangle is increased by 30% and the breadth of the rectangle is increased by 20%. Then the perimeter of the rectangle will increase by what percent ?

1)	30%	2)	26%
3)	56%	4)	D.I
5)	None of these

Q239.

In a History examination, the average of the entire class was 80 marks. If 10% of the students scored 95 marks and 20% scored 90 marks. What was the average marks of the remaining students of the class ?

1)	55	2)	65
3)	75	4)	78
5)	None of these

Q240.

In a recent survey 40% houses contained two or more people. Of those houses containing only one person, 25% were having only a male. What is the percentage of all houses, which contain exactly one female and no male ?

1)	30%	2)	45%
3)	60%	4)	75%
5)	None of these