Question
Rahul invested Rs. ‘x’ at 13% p.a. and Rohit
invested Rs. (x + 300) at 12% p.a. If the interest after 3 years is Rs. 1755, find the value of ‘x’.Solution
According to the question,
(x × 0.13 × 3) + {(x + 300) × 0.12 × 3} = 1755 Or, 0.39x + 0.36x + 108 = 1755 Or, 0.75x = 1647 Or, x = 1647 / 0.75 = 2196 Or, x = Rs. 2196
A submarine can travel a certain distance downstream in 4 hours and the same distance upstream in 8 hours. If the submarine's speed in still water is 12...
Speed of current is equal to 35% of speed of boat in still water. If the boat takes 7 hours to cover 140 km in still water, then find the time taken by ...
A man rows 40 km upstream and 60 km downstream in 8 hours. If the ratio of his upstream speed to downstream speed is 2:3, then find the time required to...
A boat’s speed against the stream is 66.67% less than its speed in still water. If it covers 180 km downstream in 4 hours, find the time (in minutes) ...
The speed of the boat in still water is 12 km/hr and the speed of the stream is 9 km/hr. A boat goes 105 km downstream with its usual speed but at the t...
The cost price of an item is 60% less than its marked price, which is 50% more than its selling price. What is the profit percent...
A man can go on a motorboat with a speed of 12 km/hour in still water to a certain upstream point and return to the starting point in a river that flows...
The velocity of a boat when moving downstream is 18 km/h greater than the speed of the stream. If it takes the boat 8 hours to travel 192 km downstream,...
A boat takes 5 hours longer to travel 15 km upstream than it does to travel 20 km downstream. The speed of the boat in still water is 5 km/hr. Calculate...
The downstream speed of a boat is 25% more than its upstream speed. The boat takes 3.2 hours to travel 57.6 km upstream.
W...
Relevant for Exams:
