Thursday, 30 April 2020

If the SIMPLE interest for an amount at 4% per annum for 3 years is Rs.1200. Find the COMPOUND interest at the same rate for the same amount for 2 years.

 If the SIMPLE interest for an amount at 4% per annum for 3 years is Rs.1200. Find the COMPOUND interest at the same rate for the same amount for 2 years.
A. Rs.10116
B. Rs.10720
C. Rs.10616
D. Rs.816

Ans: D
Explanation:
S.I for 3 years =1200
S.I for 1 year =1200/3=400
C.I for 2 years =400+[400+400*(4/100)]
=400+416=816

2. Which of the following is/are true?
(i) ax=bx-->a=b
(ii) x/a=x/b-->a=b
(iii) a=b-->ax=bx
(iv) a+x=b+x-->a=b

A. (i),(ii),(iii),(iv)
B. (i),(ii) and (iv) only
C. (i) and (iv) only
D. (iii) and (iv) only

Ans: D
Explanation:
(i) and (ii) are false if x=0(zero)

3. If + means *, - means +, * means /, / means - then the value of 84*28+8/10-9=
A. 23
B. 22
C. 30
D. 26

Ans: A
Explanation:
84/28*8-10+9 = 3*8-10+9 = 24-10+9=23

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