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Phổ biến >

Jonathan is now three times as old as his son.twelve years ago he was six times as old as his son. Find the present ages of each

Lời Giải

Jonathan is now three times as old as his son.twelve years ago he was six times as old as his son. Find the present ages of each

Lời Giải

Son^{'} s age is : 20

Jonathan^{'} s age is : 60

Các bước giải pháp

Translate the problem into an equation:

3 x - 12 = 6 (x - 12)

Giải

x, 3 x - 12 = 6 (x - 12) : x = 20

Tìm age

Son^{'} s age is : 20

Jonathan^{'} s age is : 60

Ví dụ phổ biến

Jonathan is now three times as old as his son is. Twelve years ago he was six times as old as his son was. Find the present ages.Melanie walked for 2.5 hours at a speed of 3.2 miles per hour. How far did Melanie walk?What is the speed of a car that is traveling 100 km in 3 hours?A boat traveled at a constant speed for 5 hours, covering a total khoảng cách of 384 kilometers. How fast was it going?A family drives 4 1/2 miles in 1/10 of an hour. What is their rate of speed in miles per hour?