42 boxes of nails at .4 pounds a box would weigh 16.8 pounds.
Ratio of boys to girls= 17:3
number of people= 740
to find the number of boys out of 740 people, you have to add the ratio together and divide 740 by it. then multiply the answer by 17 because the ratio for boys is 17.
17+3=20
740÷20=37
37×17=629
answer= 629
hope this helps....
Well if you add them all together you would get 25. You would have 9/25 red marbles. Then you would take 9 and divide it by 25 and get 0.36 and if you move the decimal over 2 places you’ll get 36%
Multiply 4 on both sides.
x = 8 / 5
x = 1 3/5
Hope this helps!