75 kgs of rice is required for 20 students for 18 days .After 6 days two students left . The time in days for which the remaining rice is sufficient for the remaining students is
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Answer:
19.33 days
Step-by-step explanation:
20 students for 18 days rice = 75 kg
20 students 1 days rice= 75/18
1 student 1 days rice= 75/(18x20)
=15/(18x4)
=5/(6x4)
=5/24
= 0.20833 kg
As 2 students left after 6 days and left behind 2 students rice of 12 days
= 2 students 12 days rice= 0.20833x2x12= 5 kg
Balance students are = 20-2= 18 students
Let d be the no. of extra days, 5 kg rice consumed
then, 18 students d days rice= 0.20833xdx18= 5
⇒ d= 5/(0.20833x18)
⇒ d = 1.33 days
total nos. of days= 18+1.33 days
= 19.33 days
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