X - the amount of ribbon she started with
She started with 16 feet of ribbon.
Answer:
sorry ?
Step-by-step explanation:
Let's start by working out what percentage 38 / 55 is. To work this out, literally just do 38 ÷ 55, and then × 100. So Samantha got 69% (to the nearest percent).
To pass the test, you needed 70%. Therefore, Samantha failed as 38 ÷ 55 × 100 shows us that 38 marks is equivalent to 69%, which is not enough to pass.
After 2 years you have 45 fishes!
20x1.5 =30 after 1st year
30x1.5=45 after 2nd year