Agroup of students is meeting in the cafeteria. 70 students have already arrived. this is 35% of the group. how many students are in the group

Let w=23 . what is the value of w + 45 ?

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.