Water flows into a tank according to the rate f(t)= (t+6)/(1+t), and at the same time empties out at the rate e(t)= (ln(t+2))/(t+1), with both f(t) and e(t) measured in gallons per minute. how much water, to the nearest galllon, is in the tank at time t=10 minutes.
; i am confused!

Water flows into a tank according to the rate F of t equals the quotient of 6 plus t and the quantity 1 plus t , and at the same time empties out at the rate E of t equals the quotient of the natural log of the quantity t plus 2 and the quantity t plus 1 , with both F(t) and E(t) measured in gallons per minute. How much water, to the nearest gallon, is in the tank at time t = 10 minutes