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פּוֹפּוּלָרִי Word Problems >

Ben is 30 years old and Daniel is 2 years old. How many years will it take until Ben is only 3 times as old as Daniel?

פתרון

B e n i s 30 ye a rs o l d an d D ani e l i s 2 ye a rs o l d . Ho w man y ye a rs w i ll i t t ak e u n t i l B e n i s o n l y 3 t im es a s o l d a s D ani e l ?

פתרון

Number of years from now : 12

צעדי פתרון

Translate the problem into an equation:

3 (2 + x) = 30 + x

3 (2 + x) = 30 + x, x

פתור בשביל:

x = 12

Number of years from now : 12

דוגמאות פופולריות

Thomas buys a house for z dollars. After 12 years the value of the house increased by 39%. Which expression best represents the current value of the house?the quotient of a number and four is four Santiago is going to invest in an account paying an interest rate of 3.3% compounded annually. How much would Santiago need to invest, to the nearest ten dollars, for the value of the account to reach 81,000 in 16 years?Larry inherited some money from his grandfather and put it in a bank account that earns 2% interest compounded monthly. After 9 years, Larry had 500.00 in the bank account. How much interest did he earn?Seven more than the product of a number and 8 is equal to 9.