Question

Jamila babysits to earn money. The mean amount she
earns each time she babysits is $24. If she babysits
nine evenings and earns the following amounts: $15,
$20, $10, $12, $20, $16, $18, and $25, how much did she
earn the ninth evening?​

Answer 1

Answer:

$80

Step-by-step explanation:

Give jamila's Mean earning = $24

let her ninth earning be x

we know that mean= (∑sumation of earnings)/number of earnings

$24= \frac{15+20+ 10+ 12+ 20+ 16+ 18+ 25+x}{9}$

$24= \frac{136+x}{9} \\24*9=136+x\\216=136+x\\x=136-216\\x=80$

Her ninth earning is $80