If one shirt is sold for $15.50, the amount of shirts you'd be able to buy with $139.50 is 9.
Multiply 9 by 3 and you get your answer: 27 Shirts
These concepts become more clear when teachers use number disks instead of base ten blocks. Place value is a very important concept for elementary students because base ten is the foundation of our number system.
I believe the answer would be B, good luck
9:2 is equivalent because it is dividing each side by the same amount. 18 divided by 2 is 9 and 4 divided by 2 is equal to 2, so 9:2 would be equivalent to 18:4.
