Since you didn't give me a total # of questions on the test, I can't give you a direct answer....
But I can walk you through.
In math, "of", means you have to multiply.
80%= .8 This is bc 100% is = 1.00. () mean times or multiplied by ==================================================================== So you would do .8(how ever many total questions were on the test) Whatever # you get is the answer.
1 pound= 16oz if 8oz=1.59 so add it up 4 times 8+8+8+8= 32 which = 2 pounds total 8=1.59 8+8= 1.59x2=3.18 8+8+8=1.59x3=4.77 8+8+8+8/ 1.59x4= 6.36 so all of them eights will = up to 2 pounds and 8 is obviously less