[B].
[C].
[D].
Answer: Option A
Explanation:
Go on adding 5, 8, 11, 14, 17, 20.
So, the number 47 is wrong and must be replaced by 46.
[B].
[C].
[D].
Answer: Option B
Explanation:
Increase in 10 years = (262500 – 175000) = 87500.
| Increase% = | 87500 | x 100 | % = 50%. | |
| 175000 |
| Required average = | 50 | % = 5%. | |
| 10 |
[B].
[C].
[D].
Answer: Option B
Explanation:
| Let the ten’s and unit digit be x and | 8 | respectively. |
| x |
| Then, | 10x + | 8 | + 18 = 10 x | 8 | + x | ||
| x | x |
10×2 + 8 + 18x = 80 + x2
9×2 + 18x – 72 = 0
x2 + 2x – 8 = 0
(x + 4)(x – 2) = 0
x = 2.
A. 2km/hr
B. 4km/hr
C. 6km/hr
D. 9km/hr
Explanation:
Speed upstream = 3/3 km/hr =1 km/hr
Speed downstream = 15/3 km/hr = 5 km/hr
Speed of current = ½(5 -1) km/hr = 2 km/hr
[B].
[C].
[D].
Answer: Option C
Explanation:
Required difference = (700000 – 70) = 699930
[B].
| 36 | 2 |
| 3 |
[C].
| 37 | 1 |
| 2 |
[D].
Answer: Option D
Explanation:
Let distance = x km and usual rate = y kmph.
| Then, | x | – | x | = | 40 | 2y(y + 3) = 9x ….(i) |
| y | y + 3 | 60 |
| And, | x | – | x | = | 40 | y(y – 2) = 3x ….(ii) |
| y -2 | y | 60 |
On dividing (i) by (ii), we get: x = 40.
[B].
[C].
[D].
Answer: Option B
Explanation:
| 935421 x 625 = 935421 x 54 = 935421 x | 10 | 4 | ||
| 2 |
| = | 935421 x 104 | = | 9354210000 |
| 24 | 16 |
= 584638125