Question. Martha met Ellen in the grocery store alone and asked her age. Martha realized she was twice as old as Ellen will be in six years. If Ellen is 10 years old now, calculate Martha's age now.
Answer. 32
What step-by-step reasoning justifies that answer?
Reasoning: In six years, Ellen will be 10 + 6 = 16 years old. If Martha is twice Ellen's age in six years, she is 2 * 16 = 32 years.