35 hours because if he worked 5 hours for 3 days, 5x3 = 15 and if he worked 20 hours the previous week, 15+20=35.
If X = hours worked after school If Y = hours worked Saturday X + Y = 12 4X + 5Y= 52.5 so we can re-arrange equation 1 to have X = 12 - Y if we substitute that into equation 2 4(12-Y) + 5Y = 52.5 48 - 4Y + 5Y = 52.5 Y= 4.5 and X = 7.5
7.5 after school and 4.5 on Sat.
(Cost to fillerup) = (cost for one gallon) times (number of gallons of empty space in the tank) (Your average speed) = (distance you drove) divided by (the time it took you) (Hours you worked last week) = [ 5 times (hours you worked every morning) ] plus [ 5 times (hours you worked every afternoon) ]
36 x 8.50 = 306
You can create simultaneous equations : 2 equations that when solved will give your answer Need to calculate 7a + 8.25b = 171.50 ( this calculates the pay) and a + b = 22 (the amount of hours worked ) a is the amount of hours worked at the 1st job, b the amount of hours worked in the 2nd job so: 7a + 8.25b = 171.50 (formula 1) a + b =22 (formula 2) SO multiply formula 2 by 7 to give 7a + 7b = 154 (call this formula3) Now if you take away formula 3 from formula 1 you get 1.25b = 17.50 so b = 17.50 /1.25 = 14 hours therefore going back to formula 2 : a + 14 = 22 , therefore a is 8 hours So in the 2nd job the person worked 14 hours and therefore in the 1st job the person worked 8 hours (= 22-14).
He made 307.50 in total.
6
74 hours
If X = hours worked after school If Y = hours worked Saturday X + Y = 12 4X + 5Y= 52.5 so we can re-arrange equation 1 to have X = 12 - Y if we substitute that into equation 2 4(12-Y) + 5Y = 52.5 48 - 4Y + 5Y = 52.5 Y= 4.5 and X = 7.5
7.5
zito.
52
7.5 after school and 4.5 on Saturday.
7.5 after school and 4.5 on Sat.
I maid 17,000 last year, but I only worked about 20 hours a week
(Cost to fillerup) = (cost for one gallon) times (number of gallons of empty space in the tank) (Your average speed) = (distance you drove) divided by (the time it took you) (Hours you worked last week) = [ 5 times (hours you worked every morning) ] plus [ 5 times (hours you worked every afternoon) ]
36 x 8.50 = 306