Julia needs to cut a 15 m rope into a 20 equal pieces calculate the length of each piece in cm

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be able to prepare using the sauce?

Sum of the interior angles of a pentagon

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?