Please do not write in the paper, please answer using keyboard and computer, I need it to be computerized thankyou

d. Mario alone can finish a set of furniture in 15 days. Arnold alone can do the same job in 10 days. In how many days will they finish the set of the same type if they work together? e. Arnel can finish a certain task in 21 hours. Jonathan can do the task in 28 hours. Mariano can do the same task in 48 hours. How long will it take them to finish the task if they will work together? f. Glydhel can finish accounting work in 8 hours. Danielle can finish the same work in 6 hours. After 2 hours of working together, Glydhel left Danielle for lunch and Danielle finished the job. How long does it take Danielle to finish the job? 1 g. Two cars leave Sapang Palay at the same time and travel in the opposite direction. If one travels at 42 km per hour and the other at 48 km per hour, how long will it take them to be 450 km apart? h. What is the distance between two cars after three hours if one car travels at the rate of 50 kilometers per hour and the other car at 60 km per hour if they have been traveling in the same direction? i. Two buses leave a station at the same time, traveling in opposite directions. The speed of the faster bus is 20 mph faster than the slower bus. At the end of three hours, they are 360 miles apart. Find the rates of speed of each bus. j. How many gallons of a 40% solution of alcohol and how much of 80% solution of alcohol should be mixed to give 40 gallons of a 50% solution ? k. How many quarts of pure alcohol should be added to 10 quarts of 10% alcohol solution to obtain a mixture of 25% alcohol? I. How many ounces of pure silver should be added to 80 ounces, 75% pure, to obtain a mixture of 80% pure