Shonna skateboarded for some number of minutes on Monday. On Tuesday, she skateboarded for twice as many minutes as she did on Monday, and on Wednessday, she skateboarded for half the sum of minutes from Mnday and tuesday. Altogether, she skateboarded for a total of three hours. How many minutes did she skatenoard each day?
+128731 Let N be the number of minutes on Monday
2N be rhe number of minutes on Tuesday
And [ N + 2N]/ 2 = [3N] / 2 = the number of minutes on Wed.
Note......3 hours = 180 min .......so we have
N + 2N + [3N] /2 =180 combine like terms on the left
3N + (3/2)N = 180 → 3N = (6/2)N
(9/2)N = 180 multiply both sides by 2/9
40 = N = Monday's minutes
2N = 80 = Tuesday's minutes
[3 (40) ] / 2 = 60 minutes = Wed.
+128731 Let N be the number of minutes on Monday
2N be rhe number of minutes on Tuesday
And [ N + 2N]/ 2 = [3N] / 2 = the number of minutes on Wed.
Note......3 hours = 180 min .......so we have
N + 2N + [3N] /2 =180 combine like terms on the left
3N + (3/2)N = 180 → 3N = (6/2)N
(9/2)N = 180 multiply both sides by 2/9
40 = N = Monday's minutes
2N = 80 = Tuesday's minutes
[3 (40) ] / 2 = 60 minutes = Wed.
