Ratio problems

In a box of 48 oranges, 1 in every 6 oranges are rotten. How many oranges are rotten?

In class 5 there are 2 girls for every 3 boys. There are 30 children in the class. How many boys are there?

A machine produces 6 yards of yarn in 2 minutes. How many yards of yarn can it produce in 1 hour?

At swimming club there is 4 pink goggles for every 3 blue goggles. How many blue goggles are there if there is 21 pink goggles are there?

what is equivalent to 10:20 (only one answer)

In the pet shop there is 2 dogs for every 5 cats. How many dogs will there be if there is 50 cats?

what is equivalent to 5:15

There are 7 milk chocolates for every 4 dark chocolate pieces in a box of 28 chocolates. How many dark chocolate pieces are there

In a box of sweets there are 3 boiled peanuts for every 2 mints. if there are 25 sweets in the box then how many of them are boiled peanuts and how many of them are mint?

There are 5 hot dogs for every 10 bags of lays. If there is 20 bags of chips then how many hot dogs are there?