If half of a number is 30,then three-quarters of that number is _______.为什么是45?

if you take away half of a number是什么意思 If half of a number is 30,then three-quarters of that number is _______.为什么是45? if you take away half of a number , the number becomes nothing , what's the number?A 8 B 7 C 2 D 4 ,选哪一个,为什么? if you take away half of a number,the number become nothing,what's the number? A.8 B.6 C.2 D.4应该选什么? Half of the students in a calss are girls.if the number of boys was twice as large and the number of girls half as large,what would the percentage of boys in the calss become? If 120 is three tenths of a number,the number One-half of a number is 17 more than one third of that number .What is that number? Brain Teasers:What number has nothing left if you take a half from it? 一道sat考题,if half of a number is equal to 4 more than twice the number,what is the numbera.-3 b.-8/3 c.0 d.7/2 e.4首次提问,请大家多多照顾 lf half of a number is 30,then three-quarters of that number is------.它的中文 If 1/5 of a number is 12,What is 3/10 of the same number? If 25% of a number is 324 less than 70% of the same number,what is the number? Ann had a bag of glass beads.She used half of the beads to make a necklace.She and her sister then use 1/6 and 1/7 of the original number of beads respectively to make two bracelets.If there are 16 glass beads left,find the original number of glass b half a kilo of the number of,a small number of,a number of. Which is the smallest number of the four?A.two-thirds B.a half C.a quarter D.three-fourths Which is the biggest number of the four?A.One- third B Two thirds C A half D A quarter 问一道英语奥数题One day,Lily tows（牵）a fat sheep,come to Jim and says: Is there about 100 sheep in your sheepfold? Jim says: if these sheep first adds the same number of sheep,then adds half number of these sheep,next adds one fourth