Question

90 juniors took different SAT-II tests. 40% more students took the Chemistry test than took the History test, and 50% more students took the Math test than took the Chemistry test. How many students took each test?

Answer 1

Answer:

Step-by-step explanation:

4.5x=90

x=20 history

28 chemistry

42 math

They add to 90.  

History test=x

Chemistry test=1.4x

Math test=(1.5)(1.4)=2.1x

They add to 90