Menu Close

Today-is-the-birthday-of-Matongue-His-age-is-the-double-of-his-daughter-s-age-Will-this-event-happen-in-the-futur-a-Yes-Each-two-years-b-Yes-In-two-years-c-No-d-Any-correct-answer-




Question Number 139742 by mathocean1 last updated on 30/Apr/21
Today is the birthday of Matongue.  His age is the double of his daughter′s  age. Will this event happen in the  futur?  a.Yes Each two years  b. Yes In two years.  c. No  d. Any correct answer.
$${Today}\:{is}\:{the}\:{birthday}\:{of}\:{Matongue}. \\ $$$${His}\:{age}\:{is}\:{the}\:{double}\:{of}\:{his}\:{daughter}'{s} \\ $$$${age}.\:{Will}\:{this}\:{event}\:{happen}\:{in}\:{the} \\ $$$${futur}? \\ $$$${a}.{Yes}\:{Each}\:{two}\:{years} \\ $$$${b}.\:{Yes}\:{In}\:{two}\:{years}. \\ $$$${c}.\:{No} \\ $$$${d}.\:{Any}\:{correct}\:{answer}. \\ $$
Answered by Rasheed.Sindhi last updated on 01/May/21
d: age of dauvhter today.  2d: age of Matongue today.  Let after n years the age of Matongue  will be double of his daughter   again.  2d+n=2(d+n)  n=2n  n=0  The event never will come again.  (c) is correct.
$${d}:\:{age}\:{of}\:{dauvhter}\:{today}. \\ $$$$\mathrm{2}{d}:\:{age}\:{of}\:{Matongue}\:{today}. \\ $$$${Let}\:{after}\:{n}\:{years}\:{the}\:{age}\:{of}\:{Matongue} \\ $$$${will}\:{be}\:{double}\:{of}\:{his}\:{daughter}\: \\ $$$$\boldsymbol{{again}}. \\ $$$$\mathrm{2}{d}+{n}=\mathrm{2}\left({d}+{n}\right) \\ $$$${n}=\mathrm{2}{n} \\ $$$${n}=\mathrm{0} \\ $$$${The}\:{event}\:{never}\:{will}\:{come}\:{again}. \\ $$$$\left({c}\right)\:{is}\:{correct}. \\ $$

Leave a Reply

Your email address will not be published. Required fields are marked *