The average age of 27 students of a class is 22. If the age of the teacher is also added to their ages, then the average increases by one. Find the age of the teacher.
In the following figure, rectangle represents Therapists, circle represents Floral designers, triangle represents Poets and square represents Football players. Which set of letters represents Therapists who are either Floral designers or Poets ?
If price of an article decreases from Rs P1 to Rs 75, quantity demanded increases from 1000 units to 1200 units. If point elasticity of demand is 3.2 findmP1?