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פּוֹפּוּלָרִי Word Problems >

Craig is 4 years older than Bob. A year ago Craig was twice as old as Bob. How old is Bob today?

פתרון

C r ai g i s 4 ye a rs o l d er t han B o b . A ye a r a g o C r ai g w a s tw i ce a s o l d a s B o b . Ho w o l d i s B o b t o d a y ?

פתרון

Bob^{'} s age is : 5

צעדי פתרון

Translate the problem into an equation:

x - 1 = 2 (x - 4 - 1)

x - 1 = 2 (x - 4 - 1), x

פתור בשביל:

x = 9

Bob's age מצא את:

5

Bob^{'} s age is : 5

דוגמאות פופולריות

Denise is now 4 over 5 as old as her sister Deth. Four years ago, she was 3 over 4 as old as her sister. What are their present ages?Maria’s mother is now four times as old as Maria. In five years she will be three times as old as Maria. What are their ages now?Tony is 8 years older than Kyle. The sum of their ages was 32 three years ago. What is Kyle's current age?Fred is 4 years older than Barney. Five years ago, the sum of their ages was 48.Kristen is 17 years old. She is 3 years older than half the age of Dorinda. How old is Dorinda?