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人気のある Word Problems >

Ray is 19 years older than his sister Danielle. In 10 years, he will be twice as old as Danielle. How old is each of them now?

解

R a y i s 19 ye a rs o l d er t han hi s s i s t er D ani e ll e . I n 10 ye a rs, h e w i ll b e tw i ce a s o l d a s D ani e ll e . Ho w o l d i s e a c h o f t h e m n o w ?

解

Ray^{'} s age is : 28

Danielle^{'} s age is : 9

解答ステップ

Translate the problem into an equation:

x + 10 = 2 (x - 19 + 10)

x

を解く

x + 10 = 2 (x - 19 + 10) : x = 28

発見する age

Ray^{'} s age is : 28

Danielle^{'} s age is : 9

人気の例

3400 dollars is placed in an account with an annual interest rate of 7.5%. How much will be in the account after 17 years, to the nearest cent?If a number is subtracted from five times its square, the result is four. Find all such numbers.If you borrow $12000 for 6 years at an annual interest rate of 6.5% , what is the total amount of money you will pay back?Five times the sum of a number and 7 equals 8 the sum of two consecutive even numbers is 46. What are the two numbers?