Student Edition - Mathematics in Context - Britannica

Answers to Check Your Work3. a. 5 times as big is an enlargement to 500%.b. measurement ⎯→ 2 .... ⎯→ 2 .... ⎯ 1.25 ⎯⎯→ new measurementThere are different ways to solve this problem. One way is thefollowing.They need to make several enlargements. Start with 200%or 2. Then use this 200% or 2 enlargement again. Thismeans the result is now 400%, or 4. This is still too small.An enlargement of the enlarged picture to 125% will result inan enlargement of the original picture to 500%.Another way to solve this problem is to choose a measurement(for example, 100 cm) and then use the arrows to find the finalamount.100 2 ⎯→200 2 ⎯→ 400 ? ⎯→ 500To get from 400 to 500, you need to multiply by 1.25.400 100 400 (1 1 4 ) 400 (1.25)4. Multiply by 1.12.5. Total including tax is $15.44. You can calculate the tax on eachitem and find the price and add all prices, but it is easier to addthe prices first and calculate the tax for the total.Total without tax is $13.79.Including tax:$13.79 ⎯ 1.12 ⎯⎯→ $15.44Answers to Check Your Work 47