A garrison has sufficient food for 75 soldiers for a period of 90 days. after 10 days, one third of the soldiers leave. after another 10 days, 5 soldiers return from this day, how many days will the food last?
a. 80
b. 120
c. 100
d. 140
Answers
Answered by
0
100 is the correct answer
Answered by
2
Answer:142days.
Step-by-step explanation:
let food last for x days.
as we know
m*d*h = constant
⇒75*90 = 75*10+50*10+45*x
⇒6750=750+500+45 x
⇒5500= 45x
⇒x= 122 days
so food will last till (20+122)days = 142days.
Similar questions