by shivamtripathi22 | Jul 25, 2025 | Uncategorized
31. Two numbers x & y are such that the sum of 6% of x and 5% of y is (frac{3}{5}) of the sum of 6% of x and 7% of y. Then find the ratio of x and y. View Solution 32. The ratio of number of boys to that of girls in a school is 5 : 1. If 70% of boys and 60% of...
by shivamtripathi22 | Jul 25, 2025 | Uncategorized
31. Two numbers x & y are such that the sum of 6% of x and 5% of y is (frac{3}{5}) of the sum of 6% of x and 7% of y. Then find the ratio of x and y.Sol:6% × x + 5% × y = (frac{3}{5})(6% × x + 7% × y)⟹ (frac{6}{{100}}x + frac{5}{{100}}y =...
by shivamtripathi22 | Jul 20, 2025 | Uncategorized
21. A was travelling in his boat, when the wind blew his hat off and the hat started floating back downstream. The boat continued to travel upstream for 15 more minutes before A realized that his hat had fallen off and turned back downstream. He caught up with that as...
by shivamtripathi22 | Jul 16, 2025 | Uncategorized
11. A boat moves with a speed of 13 km/h downstream and 7 km/h upstream. Find the speed of the boat and stream.Sol: B + W = 13B – W = 7B = 10 km/hW = 3 km/h Answer Video Solution on Youtube 12. A man can row 45 km upstream and 66 km downstream in 15 h....
by shivamtripathi22 | Jul 16, 2025 | Uncategorized
31. In a 1 km race, the speeds of A and B are in the ratio of 5 : 3 and A wins by 10 seconds. Find the time taken by B to finish the race and distance covered by B when A finishes the race.Sol:Distance is constant∴ Time ∝...
by shivamtripathi22 | Jul 14, 2025 | Uncategorized
21. A and B run a race of 2000m. First A gives B a start of 200m and beats him by 30 sec. Next, A gives B a start of 3 minutes and is beaten by 1000m. find the time in minutes in which A and B can run the race...
by shivamtripathi22 | Jul 13, 2025 | Uncategorized
11. In a race of 400m, A gave B a head start of 20m at the start of the race. B took 48 seconds to complete the race. What was the speed of A if B defeated A by a margin of 2 seconds...
by shivamtripathi22 | Jul 13, 2025 | Uncategorized
21. If Ram’s height is 10% more than Shyam’s height. By how much % is Shyam’s height less than that of Ram’s...
by shivamtripathi22 | Jul 8, 2025 | Uncategorized
11. The price of a commodity rises from Rs. 10 per kg to 12.5 per kg. If the expenditure can not increase then find the percentage of reduction in consumption.Sol:% increase in price = (frac{{12.5 – 10}}{{10}} times 100)=...
by shivamtripathi22 | Jul 7, 2025 | Uncategorized
21. In a class, the ratio of number of girls to boys is 1:2. If the average weight of boys is 55 kg and the average weight of girls and boys is 50 kg then find the average weight of...
