The food in a camp lasts for 20 men for 40 days. If ten more men join, how many days will the food last?	Pick:
A) 40 days
B) 20 days
C) 30 days
D) 50 days
E) 45 days
one man can consume the same food in 20*40= 
<gadget id="calculator">20*40</gadget>
<output>800</output>
800 days.   10 more men join, the total number of men= 20   The number of days the food will last = 800/20= 
<gadget id="calculator">800/20</gadget>
<output>40</output>
40 days.   40 daysNSWER:40 days
<result>A</result>
The food in a camp lasts for 20 men for 40 days. If ten more men join, how many days will the food last?