R S Aggarwal and Veena Aggarwal Solutions for Exercise 7: MULTIPLE-CHOICE QUESTIONS (MCQ)

In a $\Delta ABC,\angle C=3\angle B=2(\angle A+\angle B),$ then $\angle B=$?

In a cyclic quadrilateral $ABCD$, it is being given that $\angle A={(x+y+10)}^{°},\angle B=(y+20)°$,

$\angle C=(x+y-30)°$ and $\angle D=(x+y)°$. Then $\angle B=$?

The sum of the digits of a two-digit number is $15$. The number obtained by interchanging the digits exceeds the given number by $9$. The number is 

In a given fraction, if $1$ is subtracted from the numerator and $2$ is added to the denominator, it becomes $\frac{1}{2}$ and if $7$ is subtracted from the numerator and $2$ is subtracted from the denominator, it becomes $\frac{1}{3}$. Then, the fraction is

$5$ years hence, the age of a man shall be $3$ times the age of his son while $5$ years earlier the age of the man was $7$ times the age of his son. The present age of the man is 

The graph of the equations $6x-2y+9=0$ and $3x-y+12=0$ are two lines which are

The graphs of the equations $2x+3y+9=0$ and $x-2y-8=0$ are two lines which are 

The graphs of the equations $5x-15y=8$ and $3x-9y=\frac{24}{5}$ are two lines which are