The weighs of tapan and Rehana are in the ratio of $6:7$. If Tapan's weight is $66kg$, find the Rehana's weight.

Q.

If the ratio of Arun's weight to Vinay's weight is 6 : 11 and Arun's weight = 30 kg, then find Vinay's weight.

Q. The ratio of present ages of Rehana and her mother $2:7$. After $2$ years, the ratio of their ages will be $1:3$. What is Rehana's present age?

Q. The ratio of present ages of Rehana and her mother is 2 : 7. After 2 years, the ratio of their ages will be 1 : 3. What is Rehana's present age ?

Q.

The ratio of Alpha’s weight to Beta’s weight is 6:7. If Alpha’s weight is 84kg, How much does Beta weigh?

Q. The ratio of weights of copper and zinc in brass is $13:7$. Find the weight of zinc in a brass utensil weighing $700gm$.