Question

what is compound variation and how to solve a problem based on compound variation?

Answer 1

there are some problems which involve more than 2 different variation 
(directly or indirectly) such problems are compound variation
EX:if 120 children consume 300 LT of milk in 30 days,in how many days 30 students children consume 540LT of milk

ANS:this problem based on compound variation
20 students consume300 LT of milk in30 days

1 STUDENT CONSUME 300 LT OF MILK IN 30 *20DAYS

30 STUDENTS CONSUME300 Lt OF MILK in 30*20/30 days

30 students consume 1 LT of milk in 30*20 /30*300 days

30 studsents consume 540 LT of milk in 30*20*540/30*300 days

ANS:36

Answer 2

Answer:

Step-by-step explanation:

There are some problems which involve more than 2 different variation 

(directly or indirectly) such problems are compound variation

EX:if 120 children consume 300 LT of milk in 30 days,in how many days 30 students children consume 540LT of milk

ANS:this problem based on compound variation

120 students consume300 LT of milk in30 days

1 STUDENT CONSUME 300 LT OF MILK IN 30 *20DAYS

30 STUDENTS CONSUME300 Lt OF MILK in 30*20/30 days

30 students consume 1 LT of milk in 30*20 /30*300 days

30 studsents consume 540 LT of milk in 30*20*540/30*300 days

ANS:36