Two numbers are in the ratio 5: 7.
The difference between the numbers is 12.
What is the larger number?

The ratio of the cost of a DVD player to the cost of a movie is 9:2.
A DVD player costs $63 more than a movie.
What is the cost of a DVD player?

Armand cuts a piece of wire into two smaller pieces that are in a ratio 7:5.
The shorter piece is 40 cm.
What was the length of the original piece of wire?

Two numbers are in the ratio 7: 9.
The difference between the numbers is 10.
What is their sum?

There are 22 more boys than girls at the school play.
The ratio of boys to girls is 5:7.
How many students were there altogether?