A man can row downstream at 10 kmph and upstream at 5 kmph. The man's rowing rate in still water is ----

2.5 km/hr

5 km/hr

7.5 km/hr

15 km/hr

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

ব্যাখ্যা ও সঠিক সমাধান

উত্তর: 7.5 km/hr

Let the man's rowing rate and stream's flowing rate be U and V respectively. So, U + V = 10 And, U - V = 5 - - - - - - - - - - - - - - - - - - - - - - - U + U = 10 + 5 [By addition] or, 2U = 15 So, U = 7.5 km/hr

পূর্ববর্তী আগের প্রশ্ন

পরবর্তী সামনের প্রশ্ন

অনুসন্ধান করুন

বিস্তারিত সমাধান

A man can row downstream at 10 kmph and upstream at 5 kmph. The man's rowing rate in still water is ----

There are 12 more apples than oranges in a basket of 36 apples and oranges. How many apples are in the basket?

The minimum value of 2x2 +8x -5 is

There are 900 students in a school. 4% of them left the school and 50% of the remaining are girls. How many girls remained?

If product of 3 consecutive integers is 120, then the sum of the integers is--

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. what is the probability that the ticket drawn has a number which is a multiple of 3 or 5?

what least number must be added to 1056 , so that the sum is completely divisible by 23?

Running at the same constant rate 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?

3 pumps , working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?

৯৬ টি আম x, y এবং z-এর মধ্যে এমনভাবে ভাগ করে দেয়া হলো যে, x পেল z-এর ৪ গুণ এবং z পেল y-এর ৩ গুণ আম। y কয়টি আম পেল?

The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?

কোর্স

অনুসন্ধান করুন

বিস্তারিত সমাধান

A man can row downstream at 10 kmph and upstream at 5 kmph. The man's rowing rate in still water is ----

সম্পর্কিত বিষয় সমূহ

সম্পর্কিত অন্যান্য প্রশ্ন

There are 12 more apples than oranges in a basket of 36 apples and oranges. How many apples are in the basket?

The minimum value of 2x2 +8x -5 is

There are 900 students in a school. 4% of them left the school and 50% of the remaining are girls. How many girls remained?

If product of 3 consecutive integers is 120, then the sum of the integers is--

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. what is the probability that the ticket drawn has a number which is a multiple of 3 or 5?

what least number must be added to 1056 , so that the sum is completely divisible by 23?

Running at the same constant rate 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?

3 pumps , working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?

৯৬ টি আম x, y এবং z-এর মধ্যে এমনভাবে ভাগ করে দেয়া হলো যে, x পেল z-এর ৪ গুণ এবং z পেল y-এর ৩ গুণ আম। y কয়টি আম পেল?

The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?