Answer:
35 pounds
Step-by-step explanation:
(20*16)+(16*15)=x
320+240=560
16 ounces = 1 pound
560/16= 35
Let present ages of father be x and of son is y years
x/y = 7/2, 2x=7y, y=2x/7
(y+5)=37/100*(x+5)
(2x/7+5)=37/100*(x+5)
(2x+35)/7=(37x+185)/100
200x+3500=259x+1295
259x-250x=3500-1295
59x=2205
x=37.37 years
...I got Y=1..
Don't trust it though I am not certain that is the correct answer.
8x + 84 = 500
8x = 416
x = 52
So if he wants to earn more than 500 dollars, he needs to make more than 52 dollars a week.