show your solution, mr and mrs saywer taking their three children to an amusement park,the admission is p pesos per adult ,c pesos per child and the cost of each ride is r-pesos per person

a.write an expression for the cost of admission + 10 rides for the family
b find the cost of admission plus 10 rides if the admission for adult is P30, the admission per child is P15 and the cost of each ride is P10​