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### Mathmetics

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

##### Each of the questions given below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.What will be the compound interest earned on an amount of Rs. 5000 in 2 years ?I. The simple interest on the same amount at the same rate of interest in 5 years is Rs.2000.      II. The compound interest and the simple interest earned in one year is the same.III. The amount become more than double on compound interest in 10 years.
 1) I only 2) I and II only 3) II and III only 4) I and III only 5) None of these
Explanation :
Explanation:
P = Rs. 5000 & T = 2 years.
I. S.I. on Rs. 5000 in 5 years is Rs. 2000.
(5000 x R x 5)/100  = 2000   or       R = 8.
Thus I only gives the answer.
##### Each of the questions given below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.       What is the area of the hall ? I. Material cost of flooring per square meter is Rs. 2.50 II. Labour cost of flooring the hall is Rs. 3500 III. Total cost of flooring the hall is Rs. 14,500.
 1) I and II only 2) II and III only 3) All I, II and III 4) Any two of the three 5) None of these
Answer : All I, II and III
Explanation :
Explanation:
I. Material cost = Rs. 2.50 per m2
II. Labour cost = Rs. 3500.
III. Total cost = Rs. 14,500.
Let the area be A sq. metres.
Material cost = Rs. (14500 - 3500) = Rs. 11,000.
5A/2 = 11000  or    A = (11000 x 2 )/5 = 4400 m2.
Thus, all I, II and III are needed to get the answer.
##### A shopkeeper sells some articles on profit of 20% of the cost price. Find out the actual Gain ? I. Selling price of the article. II. Cost price of the article
 1) Neither I nor II 2) Either I or II 3) Both I and II 4) Only II 5) Only I
Answer : Either I or II
##### 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 I2) Only II3) Both I & II4) Either I or II5) Both I & II are not sufficient to answer the question.Ram invested Rs 9000 in two parts at different rates. Find out the rate of interest ?I. After 4 years both the parts yield the same interest.II. He invested Rs. 4000 at 1% higher rate of interest than the one at which he invested the rest amount.
 1) 1 2) 2 3) 3 4) 4 5) 5
##### 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 I2) Only II3) Both I & II4) Either I or II5) Both I & II are not sufficient to answer the question.In some years the simple interest on a certain sum amounts to one fifth of the sum. Find the rate of interest ?I. The value of the sum is Rs. 5000II. At the end of 5 years total amount is Rs 6000.
 1) 1 2) 2 3) 3 4) 4 5) 5
##### 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 I2) Only II3) Both I & II4) Either I or II5) Both I & II are not sufficient to answer the question.If X and Y working together can complete the job in 20 days in how many days can Y finish italone ?I. X alone can finish the job in 60 days.II. Y works twice as fast as X.
 1) 1 2) 2 3) 3 4) 4