Mr. Walker travels a miles in b hours and then c miles in d hours. How many hours will be needed to travel 500 miles if he maintains this average rate?

Created: 2 years ago | Updated: 1 year ago

Updated: 1 year ago

500/a+c

500(b+d)/a+c

a +c/500(b +d)

500/b +d

জাহাঙ্গীরনগর বিশ্ববিদ্যালয় G ইউনিট উচ্চতর গণিত সমতলে বস্তুকণার গতি (Motion of particles in a plane)

Des

434

Best Ans:

D¹= a miles t¹=b hours

D²= c miles t²= d hours

Average= d¹+d²/t¹+t²

= a + c / b+ d

500/a + c/b + d

=500(b+d)/a + c

Ans. B

1 year ago

0 0

Sudip paul

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