X = 1 hr lessons and y = 1/2 hr lessons
x + y = 35......y = 35 - x
40x + 25y = 1115
40x + 25(35 - x) = 1115
40x + 875 - 25x = 1115
40x - 25x = 1115 - 875
15x = 240
x = 240/15
x = 16 <=== there are 16 one-hr lessons
and 19 half-hr lessons
Answer:
123idbd8dbo<u>k</u><u>e</u><u>o</u><u>f</u><u>y</u><u>c</u><u>c</u><u>b</u><u>d</u><u>i</u><u>d</u><u>1</u><u>2</u><u>3</u><u>3</u><u>2</u>
2a+8a
Add 2 and 8.
2a+8a=10a
10,000-1,000=9,000 -100
8,900,i think maybe
Start with the distance equation D=RT, then plug in numbers
194=R x 4.2, so all we have to do is divide 194 by 4.2.
Answer: 46.19 kph