1.6×(3+2)÷10 2.12-(3×3)+11 3.(10×0.4)+(10×0.8) 4.(8÷4)×(4-2) 5.8.5-10÷2 6.18-(8÷2)+25 7.12÷3+4×5 8.50-(5×5)+13 9.(14-8)×(15-4) 10.3/4+1/2×2 11.20-12+8×5 12.31-(75÷3)÷5 show your work plz i will give u 24 points

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!