A fisherman can row 9 miles downstream in the same amount of time it takes him to row 3 miles upstream of the curent is 6 miles per hour, find how long it take shim to cover 12 miles

It will take 1 hour.

Step-by-step explanation:

Given,

Speed of current = 6 miles per hour,

Let x be the speed of boat ( in miles per hour ),

So, the speed of fisherman,

In downstream = (x + 6) miles per hour,

In upstream = (x-6) miles per hour,

Since

Thus, the time taken in 9 km downstream =

And, the time taken in 3 km upstream =

According to the question,

Thus, the speed fisherman is 12 miles per hour.

Hence, the time taken to cover 12 miles is 1 hour.

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.