I hope im not to late to help but the anwers is 11 because JH and OM the same :)
Answer:
since the unknown amount can buy 100 pencils
he bought 70 pencils
therefore $4.50 can buy 30 pencils
so 1 pencils cost $4.50 /30=0.15
Answer:
the proper expression is 1/2 < 2/3