Question

Question 9 :
The weighted average of 10 and 15 with weights 3 and 2 respectively is
O 7.5
O 12
0 25
10

Answer 1

Step-by-step explanation:

60÷5=12 so ans is 20 only

Answer 2

Answer:

The weighted average of 10 and 15 with weights 3 and 2 respectively is option B

Step-by-step explanation:

• Weighted Average is defined as a  calculation in which a number is multiplied by its weights.
• The formulae of the weighted average is given as

       $W=\frac{\ X_{1} *w_{1} +X_{2} *w_{2} +X_{3} *w_{3} + .....}{w_{1}+w_{2}+w_{3}+.... } }$

         where X shows the number and w shows the respective weights

• Given numbers are 10,15 and weights are 3,2
• The weighted average is given as

      $W=\frac{(10*3)+(15*2)}{3+2} \\W=\frac{60}{5}\\ W=12$

Conclusion:

The weighted average of 10 and 15 with weights 3 and 2 respectively is 12