Question

Lily gave 3/4 of her sweet to Mary and 1/6 to Chris. If Lily had 89 sweets left, how many sweets did she have at first?

Answer 1

Let the total number of sweets is X 
Then
⇒3/4 of X is given to mary
⇒1/6 of X is given to chris
⇒And the remaing are 89

Looking at the results we got, If we subtract these values from the the number X we may get 89 

X-(3/4x + 1/6x)=89
X-11/12x = 89
1/12x= 89

X=1068