together Charlotte and vinny have 20 marbles. charlotte has 4 times as many as vinny. how many marbles does Charlotte have.

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

17 in long 1.3 ft wide and 8in high what is the volume

Iam at home. /: i am playing video games. translate the following statement into symbolic form.