d. b. d. a. students have food enough for 90 days. How many students should be added in the hostel so that the food is enough for 75 days? In a garrison, 800 soldiers have provision for 80 days. How many soldiers should leave the garrison so that the provision is enough for 100? In a hostel, 60 students have food enough for 45 days. How many students should leave the hostel so that the food lasts for 75 days? 150 Students of a hostel have food enough for 45 days, 25 students leave the hostel after 10 days. How much longer will the remaining food last? In a hostel, 120 students had food storage for 30 days. After 10 days, 20 students leave the hostel. How longer does the remaining food last ? 200 students of a hostel had food enough for 30 days. If 30 more students joined the hostel after a week, how long would the remaining food last? 900 soldiers of a camp had provisions for 45 days. After 15 days, an addition of soldiers was made and the provisions lasted only for 25 days. How many soldiers were added. 45 workers can do piece of work in 30 days working 12 hours a day. In how many days will that work be done by 60 workers working 10 hours a day? b. 25 workers working 8 hours a day construct a road in 63 days. How long would 4 workers take working 7 hours a day? 10 workers working 8 hours daily can do a piece of work in 12 days. How many hou
[tex]100\% \div 20\%[/tex]
