I think it is 21 and 50. The only common factor they have is 1.
All the others are divisible by 1 & 3.
You didn't tell us what the choices are, so there's
nothing to pick from.
The most accurate estimation of (54 - 16) is 38 .
Answer: choice A
Step-by-step explanation:
by rearranging the initial inequality you’ll get

which equals

then multiply both sides by 2/3

217.5/87=2.5. I put it into a calculator and this is what I got.