Question

7. If the mean of 60, 40, 70, P, and 10 is 80, find the value of P.​

Answer 1

Answer:

220

Step-by-step explanation:

$mean \: = \: 80 \\\\ let \: the \: missing \: no \: be \: p \\ \\ \frac{60 + 40 + 70 + p + 10}{5} = 80 \\ \\\\ \frac{180 + p}{5} = 80 \\ \\180 + p = 400 \\\\ p = 220 \\ \\lets \: verify \\ \\\frac{60 + 40 + 70 + 220 +10 }{5} = 80$

Answer 2

Answer:

Step-by-step explanation:

400-180= 220

60+40+70+10+p= 180+p

180+p=400

p=400-180

p=220