Question

Malina has to bowl four games in her league. She bowled a 149, 162, and a 152 in her first three games. She wants to have an average score of 154. What score does she need in her fourth game?

153
152
155
154

A is right correct lol

Answer 1

She needs 153

Explanation:

Let x be the score in the 4th game

To find the average add up the scores and divide by the number of scores added

(149+162+152+x) /4 = 154

Multiply each side by 4

(149+162+152+x) /4 *4= 154*4

(149+162+152+x) = 616

Combine like terms

x+463=616

Subtract 463 from each side

x+463-463 = 616-465

x = 153