Here buddy.. One minute method

one simple equation:

(3300 + x)*825*17 = 3300*25*850

In this equation
x = reinforcement
17 = Number of days provisions will last with the new reinforcement
25 = Number of days left out of 32 when provisions have been consumed for 7 days.
850 = Initial 850gms/day
825 = Later on 825gms/day after reinforcement arrives..


x = 1700 is the answer

dumb.doofus wrote:Here buddy.. One minute method

one simple equation:

(3300 + x)*825*17 = 3300*25*850

In this equation
x = reinforcement
17 = Number of days provisions will last with the new reinforcement
25 = Number of days left out of 32 when provisions have been consumed for 7 days.
850 = Initial 850gms/day
825 = Later on 825gms/day after reinforcement arrives..


x = 1700 is the answer

Quantity of Food at Beginning. 3300 x 850 x 32 ( in units of gms).( Note: Dividing this number by 3300 x 850, you get 32 days, so you know how to move from quantity to number of days.) After 7 seven days quantity of food left is 3300 x 850 x 25 . If no reinforcement comes and you divide by 3300 x 850 you get 25 days. With reinforcment, 3300 will go up and 850 drops to 825. You know how to get days from quantity:

(3300 x 850 x 25)/ T x 825 =17
T= (3300 x 850 x 25)/ 17 x 825
T=5000
Reinforcement is 1700.
Choose B.