What number was added to both the numerator and denominator?
Explain your answer in detail. 72e The sum of the ages of three children is 32. The age of the oldest is twice the age of the youngest. The ages of the two older children differ by three years. What is the age of the youngest child? Explain your answer in detail. 73e Below, the sum of two 3-digit numbers is represented. A, B, and C represent the digits 2, 3 and 5 but not necessarily in the same order, and different letters represent different digits. What is the largest value the indicated sum could have? Explain your answer in detail. B A C + C A B 74e (5273)2 means 5273 x 5273; (5273)3 means 5273 x 5273 x 5273; and so forth. Suppose (5273)6 is completely multiplied out. What will the units (or ones) digit be in the resulting product? Explain your answer in detail. 75e A slow clock loses 3 minutes every hour. Suppose the slow clock and a correct clock both show the correct time at 9 A.M. What time will the slow clock show when the correct clock shows 10 o’clock the evening of the same