Find each angle and arc measure

Arc ST
Arc RS
Arc SRT

When benny’s sister penny is 24, benny’s age will be 125% of her age. how old is lenny? a) how old will benny be then? b)if benny is 12 years old now, how old is penny now? explain your reasoning.

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?