a 35. Pipes A and B can fill a tank in 5 and 6 hours respectively. hours. If all the three pipes are opened together, then the tank will be filled in: 8 A. 2 hours 11 13 B. 1 hours 17 1 C. 4. hours 2 9 D. 3 hours 17

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!