If Lina is three times as old as Nick, and in 6 years she will be twice as old as he, how old are they now

Which pair of angles are vertical angles? ∠1 and ∠4 ∠1 and ∠2 ∠2 and ∠4 ∠2 and ∠3

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.