<span>0.03x+20=0.07x+5 original equation </span>0.03x+20-0.03x=0.07x+5-0.03x <span>subtract 0.03x from both sides to combine like terms </span>20=0.04x+5 20-5=0.04x+5-5 subtract 5 from both sides 15 = 0.04x 15/0.04 = 0.04x/0.04 divide both sies by 0.04 to get x alone. 375 = x <-------WOOOOOO! theres the answer!
The probability is the number of chances divided by the total number of cards. The total number of cards is 8 + 6 +1 = 15. There are 8 red cards and therefore 8 chances to get red.
8 out of 15 cards is 8/15. The probability is 8/15.
