A boat, which moves at 13 miles per hour in water without a current, goes 80 miles upstream and 80 miles back again in 13 hours. Find the speed of the current to the nearest tenth.

Speed of current is 3 miles per hour.

Step-by-step explanation:

Speed of boat without current, u = 13 miles/hr

Let speed of current = v miles/hr

Speed upstream = (13 - v) miles/hr

Speed downstream = (13 + v) miles/hr

Distance traveled upstream, = 80 miles

Distance traveled downstream, = 80 miles

Total time taken, T () = 13 hours

Formula for Total Time taken:

Time taken in Upstream:

Time taken in Downstream:

So, speed of current is 3 miles/hr

2425

step-by-step explanation:

whole number data type

step-by-step explanation:

as whole number type represents whole number

like 1, 2 ,3, 4

in other words the whole numbers are those numbers which cannot be written infraction.

since we can take days as a whole number i.e 1 day 2 day and we cannot write 1.2 day hence we will use whole number data type