"David collected 1p and 2p coins in a jar.

There are 374 coins in the jar.

The coins have a total value of £5.02.

Use algebra to find how many 1p and 2p coins there are in the jar."

"A,B,C and D lie on the circumference of a circle.

AB is parallel to CD.

BC is a diameter.

Prove the the triangles ABC and DCB are congruent."

Help? =)