Should be 42..
Here, m=2b..(i)
For Village Bilaspur, W/12m + 18b=60*7.5, or, W=1350*7m units
Thus, For Village Harigarh, W'=2700*7m units
Here, 2700*7m/21m + xb=50*9, or, 42m=21m + xb, or, x=42
@gautam22 said:....c solve karne pe aa jayega....x+y>(xy)1/2....ye hamesha true nahi hoga?
@maddy2807 said:AGAIN...In Bilaspur village, 12 men and 18 boys completed construction of a primary health centre in 60 days, by working for 7.5 hours a day. Subsequently the residents of the neighbouring Harigarh village also decided to construct a primary health centre in their locality, which would be twice the size of the facility built in Bilaspur. If a man is able to perform the work equal to the same done by 2 boys, then how many boys will be required to help 21 men to complete the work in Harigarh in 50 days, working 9 hours a day? A. 45 boys B. 48 boys C. 40 boys D. 42 boys
@maddy2807 said:AGAIN...In Bilaspur village, 12 men and 18 boys completed construction of a primary health centre in 60 days, by working for 7.5 hours a day. Subsequently the residents of the neighbouring Harigarh village also decided to construct a primary health centre in their locality, which would be twice the size of the facility built in Bilaspur. If a man is able to perform the work equal to the same done by 2 boys, then how many boys will be required to help 21 men to complete the work in Harigarh in 50 days, working 9 hours a day? A. 45 boys B. 48 boys C. 40 boys D. 42 boys
OA is 42 
@maddy2807 said:AGAIN...In Bilaspur village, 12 men and 18 boys completed construction of a primary health centre in 60 days, by working for 7.5 hours a day. Subsequently the residents of the neighbouring Harigarh village also decided to construct a primary health centre in their locality, which would be twice the size of the facility built in Bilaspur. If a man is able to perform the work equal to the same done by 2 boys, then how many boys will be required to help 21 men to complete the work in Harigarh in 50 days, working 9 hours a day? A. 45 boys B. 48 boys C. 40 boys D. 42 boys
@maddy2807 said:AGAIN...In Bilaspur village, 12 men and 18 boys completed construction of a primary health centre in 60 days, by working for 7.5 hours a day. Subsequently the residents of the neighbouring Harigarh village also decided to construct a primary health centre in their locality, which would be twice the size of the facility built in Bilaspur. If a man is able to perform the work equal to the same done by 2 boys, then how many boys will be required to help 21 men to complete the work in Harigarh in 50 days, working 9 hours a day? A. 45 boys B. 48 boys C. 40 boys D. 42 boys
AGAIN...
@maddy2807 said:AGAIN...If x satisfies the inequality |x – 1| + |x – 2| + |x – 3| >= 6, then: A. 0 B. x = 4 C. x = 3 D. None of the above
@maddy2807 said:AGAIN...If x satisfies the inequality |x – 1| + |x – 2| + |x – 3| >= 6, then: A. 0 B. x = 4 C. x = 3 D. None of the above
@maddy2807 said:AGAIN...If x satisfies the inequality |x – 1| + |x – 2| + |x – 3| >= 6, then: A. 0 B. x = 4 C. x = 3 D. None of the above
@maddy2807 said:AGAIN...If x satisfies the inequality |x – 1| + |x – 2| + |x – 3| >= 6, then: A. 0 B. x = 4 C. x = 3 D. None of the above
@maddy2807 said:AGAIN...If x satisfies the inequality |x – 1| + |x – 2| + |x – 3| >= 6, then:
A. 0 B. x = 4
C. x = 3
D. None of the above
@maddy2807 said:AGAIN...If x satisfies the inequality |x – 1| + |x – 2| + |x – 3| >= 6, then: A. 0 B. x = 4 C. x = 3 D. None of the above
@maddy2807 said:AGAIN...If x satisfies the inequality |x – 1| + |x – 2| + |x – 3| >= 6, then: A. 0 B. x = 4 C. x = 3 D. None of the above
@maddy2807 said:AGAIN...If x satisfies the inequality |x – 1| + |x – 2| + |x – 3| >= 6, then: A. 0 B. x = 4 C. x = 3 D. None of the above
OA is B 

@maddy2807 said:AGAIN...If x satisfies the inequality |x – 1| + |x – 2| + |x – 3| >= 6, then: A. 0 B. x = 4 C. x = 3 D. None of the above
AGAIN...