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In five years, Tina will be twice as old as Amy. Four years ago, Amy was one Third the age of Tina. How old are they now?

해법

In five years, Tina will be twice as old as Amy. Four years ago, Amy was one Third the age of Tina. How old are they now?

해법

Tina^{'} s age is : 31

Amy^{'} s age is : 13

솔루션 단계

Translate the problem into an equation:

y - 4 = \frac{1}{3} (x - 4), x + 5 = 2 (y + 5)

y - 4 = \frac{1}{3} (x - 4), x + 5 = 2 (y + 5) : x = 31, y = 13

Tina^{'} s age is : 31

Amy^{'} s age is : 13

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TRAVEL Rita traveled 1,250 miles in the first 3 days of her trip. At this rate, how long will it take her to travel 1,875 miles?An item is regularly priced at $47. Rafael bought it at a discount of 45% off the regular price. how much did rafael pay In 6 years, Tina will be twice as old as Amy. Two years ago, Amy was one third the age of Tina. How old are then, now?8 less than the product of-3 and a number is greater than-26 Seven more than twice a number is the same as five times the number minus fourteen.