Engineering economy exam with complete answer, Exams of Engineering Economy

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ENGINEERING

ECONOMY

(EE)

COMPOUND INTEREST

SIMPLE INTEREST

ASSIGNED PROBLEM TO SOLVE SIMPLE AND COMPOUND INTEREST  (^) 22. A MAN SPENDS 20% OF HIS MONTHLY INCOME ON RENT. OUT OF THE REMAINING MONTHLY INCOME, HE SPENDS 25% ON FOOD, RS. ‘A’ ON TRANSPORTATION AND THE REMAINING MONEY IS DEPOSITED IN THE SAVINGS ACCOUNT WHICH IS 48% OF THE TOTAL MONTHLY SALARY. IF THE AMOUNT IS DEPOSITED FOR 5 YEARS IN THE SAVINGS ACCOUNT HE GETS A SIMPLE INTEREST OF RS. 8294.4 AT THE RATE OF 7.2% PER ANNUM, THEN FIND THE VALUE OF ‘A’.  (^) 23. A PERSON LENT SOME AMOUNT TO HIS FRIEND AT 20% SIMPLE INTEREST. AFTER TWO YEARS, RS. 5000 WAS PAID AND THE REST AMOUNT WAS REPAID AT 25% PER ANNUM. IF 3RD YEAR'S INTEREST IS 6/11 OF FIRST TWO YEARS’ INTEREST. FIND THE AMOUNT OF MONEY THAT WAS LENT OUT INITIALLY? (GIVEN THAT RETURNED AMOUNT IS REDUCED FROM THE PRINCIPAL)  (^) 25. A SUM OF MONEY BECOMES 5 TIMES OF ITSELF IN 20 YEARS. IF THE RATE OF INTEREST IS DOUBLED AND TIME IS TRIPLED THEN THE SIMPLE INTEREST RECEIVED ON THE SAME SUM OF MONEY WILL BE HOW MANY TIMES OF THE SUM OF MONEY?  (^) 27. THE SIMPLE INTEREST RECEIVED ON A SUM OF MONEY AT 10% PER ANNUM IN SOME YEARS IS HALF OF THE SUM. IF THE RATE OF SIMPLE INTEREST IS 3% MORE THEN THE SIMPLE INTEREST RECEIVED ON THE SAME SUM FOR THE SAME PERIOD IS RS. 450 MORE. FIND THE SUM OF MONEY?  (^) 32. ANKIT INVESTS RS.15000 AS FIXED DEPOSIT IN A BANK AT THE RATE OF 12% PER ANNUM SIMPLE INTEREST. BUT DUE TO SOME PRESSING NEEDS, HE HAS TO WITHDRAW THE ENTIRE MONEY AFTER 5 YEARS FOR WHICH THE BANK ALLOWED HIM A LOWER RATE OF INTEREST. IF HE GETS RS. 6420 LESS THAN, WHAT HE WOULD HAVE GOT AT THE END OF 8 YEARS, THEN RATE OF INTEREST ALLOWED BY THE BANK IS?

(SIMPLE INTEREST)

 22) A MAN SPENDS 20% OF HIS MONTHLY INCOME ON RENT. OUT

OF THE REMAINING MONTHLY INCOME, HE SPENDS 25% ON

FOOD, RS. ‘A’ ON TRANSPORTATION AND THE REMAINING MONEY

IS DEPOSITED IN THE SAVINGS ACCOUNT WHICH IS 48% OF THE

TOTAL MONTHLY SALARY. IF THE AMOUNT IS DEPOSITED FOR 5

YEARS IN THE SAVINGS ACCOUNT HE GETS A SIMPLE INTEREST

OF RS. 8294.4 AT THE RATE OF 7.2% PER ANNUM, THEN FIND THE

VALUE OF ‘A’.

A. Rs. 6240 B. Rs. 7280 C. Rs. 5760 D. Rs. 6860 E. None of these.



(SIMPLE INTEREST)

 23. A PERSON LENT SOME AMOUNT TO HIS FRIEND AT 20%

SIMPLE INTEREST. AFTER TWO YEARS, RS. 5000 WAS PAID AND

THE REST AMOUNT WAS REPAID AT 25% PER ANNUM. IF 3RD

YEAR'S INTEREST IS 6/11 OF FIRST TWO YEARS’ INTEREST. FIND

THE AMOUNT OF MONEY THAT WAS LENT OUT INITIALLY? (GIVEN

THAT RETURNED AMOUNT IS REDUCED FROM THE PRINCIPAL)

A. Rs. 38000. B. Rs. 38285. C. Rs. 39000. D. Rs. 39285. E. None of these

(SIMPLE INTEREST)

 25. A SUM OF MONEY BECOMES 5 TIMES OF ITSELF IN 20 YEARS.

IF THE RATE OF INTEREST IS DOUBLED AND TIME IS TRIPLED

THEN THE SIMPLE INTEREST RECEIVED ON THE SAME SUM OF

MONEY WILL BE HOW MANY TIMES OF THE SUM OF MONEY?

A. 12 times B. 6 times C. 24 times D. 18 times E. 15 times

(SIMPLE INTEREST)

 27. THE SIMPLE INTEREST RECEIVED ON A SUM OF MONEY AT

10% PER ANNUM IN SOME YEARS IS HALF OF THE SUM. IF THE

RATE OF SIMPLE INTEREST IS 3% MORE THEN THE SIMPLE

INTEREST RECEIVED ON THE SAME SUM FOR THE SAME PERIOD

IS RS. 450 MORE. FIND THE SUM OF MONEY?

A. Rs. 2400 B. Rs. 2500 C. Rs. 2750 D. Rs. 3000 E. None of these

(SIMPLE INTEREST)  (^) 32. ANKIT INVESTS RS.15000 AS FIXED DEPOSIT IN A BANK AT THE RATE OF 12% PER ANNUM SIMPLE INTEREST. BUT DUE TO SOME PRESSING NEEDS, HE HAS TO WITHDRAW THE ENTIRE MONEY AFTER 5 YEARS FOR WHICH THE BANK ALLOWED HIM A LOWER RATE OF INTEREST. IF HE GETS RS. 6420 LESS THAN, WHAT HE WOULD HAVE GOT AT THE END OF 8 YEARS, THEN RATE OF INTEREST ALLOWED BY THE BANK IS? A. 4.68% B. 10.64% C. 8.64% D. 6.84% E. None of these

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