Question
I. 3q² -29q +18 = 0 II. 9p² - 4 =
0 In each of these questions two equations numbered I and II are given. You have to solve both the equations and give answer, if –Solution
I. 3q² -29q +18 = 0 3q² - 2q – 27 q +18 = 0 ⟹ q (3q – 2) - 9 (3q- 2) = 0 ⟹ (3q - 2) (q - 9) = 0 ⟹ q= 9, 2/3 II.9p² - 4 = 0 ⟹ P² = 4/9 ⟹ p= ±2/3 ∴ p≤q
The ratio of the speed of boat ‘A’ in still water, the speed of boat ‘B’ in still water and the speed of the current is 8:6:2, respectively. If ...
A man can row 9 km/hr in still water. If the speed of the current is 3 km/hr, it takes 4 hours more in upstream than in the downstream for the same dist...
Megha got 38% of the maximum marks in an examination and failed by 6 marks. In the same examination Teena got 42% of the total marks which is 14 marks m...
Motor boat covers a certain distance downstream in a river in 20 hours. It covers the same distance upstream in 30 hours. If the speed of the water is ...
A boat covers 440 km downstream in 20 hours. If in still water it covers 196 km in 14 hours, then find the time required to travel 420 km upstream.
A boatman takes 9 hours to cover 64 km downstream and 60 km upstream. If the ratio of his speed downstream to his speed upstream is 4:3, what is the spe...
The speed of a boat in still water is 10 kmph. It covers a distance of 60 km downstream in 5 hrs. The speed (in kmph) of the stream is
The distance covered by a boat while moving in downstream in a fixed time is 3/4 more than in upstream. The speed of stream is what % of the still water...
A boat covers a distance of 240 km downstream in 8 hours. If the ratio of upstream speed to downstream speed of the boat is 2:5, then find the distance ...
A boat travels 315 km downstream in 7 hours and 135 km upstream in 9 hours. Determine the total time the boat takes to cover 150 ...
Relevant for Exams:
