Question

The pie chart below illustrates the future plans of 200members of St.Thomas graduating class.

a)How many graduates are planning to continue studying?

b)What is the measurement of the angle representing those who plan to work?​

Answer 1

a) approximately 133 graduates

b) approximately 120°

Explanation:

a) the number of graduates planning to continue studying :

= (37 1/2% + 12 1/2% + 16 2/3%) × 200

`=(\left( 37(1)/(2) +12(1)/(2) +16(2)/(3) \right) )/(100) *200`

= (37.5 + 12.5 + 16.666666666667)×2

= 133.333333333334

…………………………………

b) the measurement of the angle representing those who plan to work :

= (360× 33 1/2)÷100

= (360× 33.333333333333)÷100

=119.999999999999