Question

19. The average of 20, 30, 40 and 50 is what % of the
sum of the four numbers.​

Answer 1

Answer:

$x = 25$

Step-by-step explanation:

$\frac{(20 + 30 + 40 + 50)}{4} = \frac{x}{100} \times (20 + 30 + 40 + 50) \\ \\ \frac{1}{4} = \frac{x}{100} \\ \\ x = \frac{100}{4} = 25 \\ \\ \\ x = 25$