Question

Mark (✓) against the correct answer
In the adjoining figure, what value of x will make AOB a straight line?



(a) x = 30
(b) x = 35
(c) x = 25
(d) x = 40

Answer 1

$\begin{array}{l}\left(\mathrm{c}\right)x=35\\ \\ (2x-10)+(3x+15)=180\\ =>2x-10+3x+15=180\\ =>5x+5=180\\ =>5x=180-5\\ =>5x=175\\ =>x=\frac{\sout{1}\sout{7}{\sout{5}}^{35}}{{\sout{5}}^1}\\ =>x=35\end{array}$