Krutika and Natasha win some money and share it in the ratio 3:4. Krutika gets £39. How much did Natasha get?

The standard distance between studs in a house is 1.5 feet. if you have a set of blueprints for a house that mark every 1.5 feet with 2 in., by how many inches will a 13-foot wall be represented?

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab