Question

The math teacher asked Edith, "How old are you?" "Sixty years less than five times my brother's age," she answered. "That doesn't help me," replied the teacher. "Yes, it does," said Edith, "He and I are twins!" How old is Edith?

Answer 1

x= twin 1 and 2

x=5x-60

x-5x=-60

-4x=-60

x=15

check 15=5(15)-60

15=75-60

15=15