Two-fifths time a plus a over 2 equals a minus 2 will be a=20
Step-by-step explanation:
We have to find a, by first writing the verbal expression into an arithmetic form as,
Two fifths times a = (2/5)a
a over 2 = a/2
a minus 2 = a-2
(2/5)a + (a/2) = a-2
We have to take LCM on LHS as 10.
(2×2 /5×2)a + (a×5 /2×5) = a-2
(4a/10) + (5a/10) = a-2
Moving 10 to the other side, we will get,
4a+ 5a = 10(a-2)
9a = 10a -20
Grouping terms we will get,
10a - 9a = 20
a = 20
Time is the duration during which any activity or work is performed. Jeanette's sister started 4 hours before the 9:00 pm which is 5:00 pm.
Given-
Jeanette's sister charges $5.50 per hour before 9:00 pm.
Jeanette's sister charges $8 per hour after 9:00 pm.
She finished babysitting at 11:00 pm
She earned total money $38.
Time is the duration during which any activity or work is performed.
Total hour she worked after the 9:00 pm,
Thus she worked total 2 hours after the 9:00 pm. She charges charges $8 per hour after 9:00 pm.Hence money earned by her in 2 hours after 9:00 pm ,
Thus money earned by her in 2 hours after 9:00 pm is $16. The money earned by her before the 9:00 pm is addition of money earned by her before 9:00 pm and after 9:00 pm. Let money earned by her before 9:00 pm is $x. Thus,
Thus the money earned by her before 9:00 pm is $22.
She charges $5.50 per hour before 9:00 pm. Hence the $22 charged by her in hours,
Therefore, hence Jeanette's sister started 4 hours before the 9:00 pm which is 5:00 pm.
Learn more about the work and time here;
Hey there! :D Jeanette's sister started at 5:00 PM. To get that answer, here's what I did: From 5-9 PM, she earned $22. That's because 5.50 x 4 = 22, then from 10-11, she charged $8 which is 8 x 2 = 16 + 22 = $38. Again, she started at 5 PM.
Hope it Helps and makes sense! :D
7 5/12 hours
8 5/12 hours
8 1/2 hours
Answer:If you would like to know how many total hours did Jeff work today, you can calculate this using the following steps:
4 2/3 hours in the morning + 3 3/4 hours in the afternoon = 4 2/3 + 3 3/4 = 14/3 + 15/4 = 56/12 + 45/12 = (56 + 45) / 12 = 101/12 = 8 5/12 hours
Jeff worked 8 5/12 hours in total.
Step-by-step explanation:
Answer:
Step-by-step explanation: