Show all work for all parts on a paper, and then take a picture and upload. Please do not just type the answer.

Please see an attachment for details A a. -12/2b. -6 c. -55m. 15. An aquarium has a volume? olume of 4X 105 litres . The aqurium initially/ contains pure frest water. At time to, water containg lograms / litre of sult is poured into the pool at a rate of 120 9 litres / minute. The salt water instantly mixes with the frosh water, and excess mixture is drained out of the pool at the same rate pe UR ( 120 litres / minute). " > ( ) write a differential equation for S(+), the mass of salt in the pool at time t. ( b) solve the differential equation to final S(+)