A high school reports that its students SAT scores were down by 20% for one year. The next year, however, SAT scores rose by 30%.The high school principal announces, "Overall test scores have improved by 10% over the past two years." ---------- State whether this statement is true or false, and explain why. If a statement is false, state the true change(answer).
+37099 That statemanet is false...here is why
say the average score is 'x' then the scores go down 20% to 0.8 x
now the scores go up 30% from 0.8x to 1.04 x
that shows that in two years scores went from
1.0 x to 1.04 x and increase of only .04 x which correlates to only 4% increase (not 10%)
