Anyone pls tell what are the correct description for these 4 diagram
Answers
The ages of Radha and Meera are in the ratio 5:7.
Four years from now the ratio of their ages will be 3:4
To Find :
Present Ages of Radha and Meera .
Solution :
\longmapsto\tt{Let\:Present\:Age\:of\:Radha=5x}⟼LetPresentAgeofRadha=5x
\longmapsto\tt{Let\:Present\:Age\:of\:Meera=7x}⟼LetPresentAgeofMeera=7x
After 4 years :
\longmapsto\tt{Age\:of\:Radha=5x+4}⟼AgeofRadha=5x+4
\longmapsto\tt{Age\:of\:Meera=7x+4}⟼AgeofMeera=7x+4
A.T.Q :
\longmapsto\tt{\dfrac{5x+4}{7x+4}=\dfrac{3}{4}}⟼
7x+4
5x+4
=
4
3
\longmapsto\tt{4(5x+4)=3(7x+4)}⟼4(5x+4)=3(7x+4)
\longmapsto\tt{20x+16=21x+12}⟼20x+16=21x+12
\longmapsto\tt{20x-21x=12-16}⟼20x−21x=12−16
\longmapsto\tt{-x=-4}⟼−x=−4
\longmapsto\tt\bf{x=4}⟼x=4
Value of x is 4 .
Therefore :
\longmapsto\tt{Present\:Age\:of\:Radha=5(4)}⟼PresentAgeofRadha=5(4)
\longmapsto\tt\bf{20\:yrs}⟼20yrs
\longmapsto\tt{Present\:Age\:of\:Meera=7(4)}⟼PresentAgeofMeera=7(4)
\longmapsto\tt\bf{28\:yrs}⟼28yrs