A. 4%
B. 5%
C. 6%
D. 8%
Explanation:
SI = 20 + 20
CI = 20 + 21
20 —- 1
100 —- ? => 5%
A. Rs.18,828.80
B. Rs.19,828.80
C. Rs.18,028.80
D. Rs.17,828.80
E. None of these
Explanation:
Let the sum be Rs.P
P{ [ 1 + 8/100]2 – 1 } = 2828.80
P(8/100)(2 + 8/100) = 2828.80 [a2 – b2 = (a – b) ( a + b)] P = 2828.80 / (0.08)(2.08) = 1360/0.08 = 17000 Principal + Interest = Rs. 19828.80
| 2 |
| 5 |
[B].
| 3 |
| 4 |
[C].
| 1 |
| 4 |
[D].
| 3 |
| 5 |
Answer: Option B
Explanation:
| 4500 x x = 3375 x = | 337575 | = | 3 |
| 4500100 | 4 |
A. 1 Year
B. 2 years
C. 3 Years
D. 4 Years
Explanation:
Time be t years 882 = 800 (1 +5/100) t
=> 882/800 =(21/20) t
(21/20) 2 = (21/20) t
=> t = 2 Therefore,
Time = 2 years
[B].
[C].
[D].
Answer: Option C
Explanation:
| A’s 1 hour’s work = | 1 | ; |
| 4 |
| (B + C)’s 1 hour’s work = | 1 | ; |
| 3 |
| (A + C)’s 1 hour’s work = | 1 | . |
| 2 |
| (A + B + C)’s 1 hour’s work = | 1 | + | 1 | = | 7 | . | ||
| 4 | 3 | 12 |
| B’s 1 hour’s work = | 7 | – | 1 | = | 1 | . | ||
| 12 | 2 | 12 |
B alone will take 12 hours to do the work.
A. Rs.4000
B. Rs.1000
C. Rs.1250
D. Rs.2000
Explanation:
P(11/10)4 – P(6/5)2 = 482
P = 2000