2fractions where the lcd is 20,but the product is not 20

Find the value of a. the diagram is not to scale. a quadrilateral is drawn. the upper and lower sides are parallel. the interior angle in the upper left corner is labeled a degrees. the angle in the upper right corner is labeled 113 degrees. the angle in the lower right corner is labeled b degrees. the angle in the lower left corner is labeled 36 degrees. a. 36 b. 144 c. 54 d. 126

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?