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Beliebt Word Problems >

A man is at present seven times as old as his daughter. In ten years from now he will be three times as old as his daughter will be then. How old is his daughter now?

Lösung

A man i s a t p rese n t se v e n t im es a s o l d a s hi s d a ug h t er . I n t e n ye a rs f ro m n o w h e w i ll b e t h ree t im es a s o l d a s hi s d a ug h t er w i ll b e t h e n . Ho w o l d i s hi s d a ug h t er n o w ?

Lösung

Daughter^{'} s age is : 5

Schritte zur Lösung

Translate the problem into an equation:

7 x + 10 = 3 (x + 10)

Löse nach

x, 7 x + 10 = 3 (x + 10) : x = 5

Daughter^{'} s age is : 5

Beliebte Beispiele

Suppose you invested 200 dollars at annual interest rate of 5% compounded continuously. How much money will you have in the account after 4 years?the su of twice a number and four times the number is 54 the sum of 5 consecutive integers is 505. What is the third number in this sequence?If 6 more than a number equals 5 more than double the number, what is the number?the sum of the square of two consecutive natural numbers is 85.determine the numbers