Answer :
Let the number of rotis taken by Raj = x
Let the number of rotis eaten by Raj = x - 1/2
Let the number of rotis eaten by Riya = x/2
Given: Total number of rotis eaten in 20 days = 110
i.e., 20 (x - 1/2) + 20 (x/2) = 110
20x -10 + 10x =110 (20x - 20/2 + 20x/2)
30x - 10 = 110
30x = 110 + 10
30x = 120
x = 120/30
x = 4
Therefore, the number of rotis
taken by Raj = 4
eaten by Raj = 4 - 1/2 = 3 1/2 (3.5)
eaten by Riya = 4/2 = 2
No. of rotis wasted in 20 days = 20 (1/2) =10
Let the number of rotis eaten by Raj = x - 1/2
Let the number of rotis eaten by Riya = x/2
Given: Total number of rotis eaten in 20 days = 110
i.e., 20 (x - 1/2) + 20 (x/2) = 110
20x -10 + 10x =110 (20x - 20/2 + 20x/2)
30x - 10 = 110
30x = 110 + 10
30x = 120
x = 120/30
x = 4
Therefore, the number of rotis
taken by Raj = 4
eaten by Raj = 4 - 1/2 = 3 1/2 (3.5)
eaten by Riya = 4/2 = 2
No. of rotis wasted in 20 days = 20 (1/2) =10
Let Raj takes x number of rotis.
Raj consumes x-0.5 rotis
Riya takes half of x = x/2 rotis
In 20 days they consume (x-0.5 + x/2)*20=110
⇒ 3x-1=11
⇒ x=4
Raj takes 4 rotis and Riya takes 2 rotis
No of rotis wasted is 0.5*20=10 rotis
Raj consumes x-0.5 rotis
Riya takes half of x = x/2 rotis
In 20 days they consume (x-0.5 + x/2)*20=110
⇒ 3x-1=11
⇒ x=4
Raj takes 4 rotis and Riya takes 2 rotis
No of rotis wasted is 0.5*20=10 rotis