phil played golf 4 days last week.his average score was 82.his total score for the 1st 3 days was 239.what was his score for the fourth day?and tell me how you did it.
2006-10-16 16:14:46 · 5 answers · asked by . 2 in Education & Reference ➔ Homework Help
To find the answer, you have to first find out what the total points were for the four days. To do that, you multiply the average score of 82 to get 328. The 4-day total minus the 3-day total (328 - 239 = 89). So the score for the 4th day is 89.
To check your work, add the 3 day score of 239 to the answer 89. This equals 328. To get the average, you divide it by 4 (because it's a 4 day average). 328 / 4 = 82
2006-10-16 16:27:07 · answer #1 · answered by Anonymous · 0⤊ 0⤋
if the average is 82 then the total would be 82*4 since there are 4 days of gold playing and the total score divided by the days is the average. think total/days = average then average*days = total. subtract 239 from the number you got and there you go.
average*days - total score of three days = score of last day
82*4 - 239 = answer
2006-10-16 16:21:02 · answer #2 · answered by evilkitty 2 · 0⤊ 0⤋
w= day 1 score
x= day 2 score
y= day 3 score
z = day 4 score
(w+x+y+z) / 4 = 82 (his average score was 82)
or w+x+y+z = 82 * 4 = 328
w + x + y = 239 (score for the 1st 3 days was 239)
so combine the two equations and get z = 89
2006-10-16 16:20:26 · answer #3 · answered by Math geek 3 · 1⤊ 0⤋
plain lazy girl
the score 4 the first 3dayz= 239
his total score 4 the 4dayz is 4* 82=328
the point got on the 4th day = 328 -239
now this solution cost 20 bucks
2006-10-16 16:23:20 · answer #4 · answered by D *)sukky 3 · 0⤊ 0⤋
(239 + x)/4 = 82
multiply both sides by 4
and you get 239 + x = 328
x = 89
2006-10-16 16:17:41 · answer #5 · answered by Bao Wow 3 · 1⤊ 0⤋