Patulong Po sa math

If the larger of two numbers whose sum is 100, is divided by the smaller number,the quotient is 4and the ramainder is 15.what are the two numbers? ​

Purchased studio equipment for 25000 paying 7500 cash and the balance on account

Aprofessional diver dives 65 feet above the surface of the water. the diver reaches a depth of 15 feet underwater before returning to the surface. what was the diver's change in elevation from highest to lowest point of dive?