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Tom is now twice as old as Jerry. Four years ago, he was three times as old as Jerry was then. How old is Tom now

الحلّ

Tom is now twice as old as Jerry. Four years ago, he was three times as old as Jerry was then. How old is Tom now

الحلّ

Tom^{'} s age is : 16

خطوات الحلّ

Translate the problem into an equation:

2 x - 4 = 3 (x - 4)

2 x - 4 = 3 (x - 4), x

حلّ لـ:

x = 8

Tom's age جد:

16

Tom^{'} s age is : 16

أمثلة شائعة

Meg invested 16,000 in a savings account. If the interest rate is 6% per year, how much will be in the account in 5 years with monthly compounding?The sum of three consecutive numbers is 42. Find the numbers.you take out a loan of 14000 dollars and intend to have it paid off in five years and the interest rate is 12.3 PERCENT per year compounding monthly so find how much money is paid each month The product of 7 and a number You deposit 120 in an investment account that earns 6.4% annual interest compounded quarterly.What is the balance of the account after 6 years?