Unit conversion
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Ratio
100

If Kelly travels for 2.5 miles, how many kilometers does she travel? Round to 2 decimal places.

Kelly travels 4.087 kilometers

100

56 is 76 of what percent? Round to 2 decimal places.

73.68%

100

How much is 6.57% of 87.93? Round to 2 decimal places.

6.57% x 87.93 = 5.78

100

17.8% of what amount is 786? Round to 2 decimal places.

4415.73

100

In a jelly package, it says to use 250ml of milk for 15 g of gelatin. If Ms. Vu wants to use 750ml of milk, how many grams of gelatin does Ms. Vu need?

15 x 750 / 250 = 45g

200

Ms. Vu wants to build a 25 cm by 31.5 cm model. What are the measurements in inches? Round to 2 decimal places.

9.84 in by 12.40 in

200

Ms. Vu asked 74 people where they want to go for vacation, 28 of them wanted to travel within the mainland US. How many percent of people who wanted to travel domestically? Round to 2 decimal places.

37.83%

200

Ms. Vu asked 74 people where they want to go for vacation, 16.22% chose Asia and 6.75% chose South America. How many people picked Asian or South America for their vacation?

74 x 16.22% = 12 picked Asia.

74 x 6.75% = 5 picked South America. 

17 totals.

200

Ms. Vu asked 74 people where they want to go for vacation. Among people who chose Australia for their vacation, 7% of them wanted to visit Sydney, which is exactly 7 people. How many people chose Australia?

10

200

A plane is flying with the speed of 925 km per 1 hour. The distance from where the plane is to destination is 4162.5 km. How many more hours does the plane need to fly?

4162.5 / 925 x 1 = 4.5 hour

300

Louvre Museum is one of the most famous museums in the world. The ticket is 22 Euro. How much is that in dollars? Hint: $1 = 1.07

$23.47

300

Ms. Vu asked 74 people where they want to go for vacation, 45 of them wanted solo-traveling. How many percent of people who want to travel with someone?

74-45 = 29 people who wanted to travel with someone.

39.19%

300

Jack put money into his saving account. The interest rate is 5% per month. In June, he has $23,875. How much will he have in July?

$23875 x 5% = $1193.75

$1193.75 + $23875 = $25068.75

300

On average, a human walk 3 miles per hour. There is a park that is 0.3 mile away from Jane's house. How many minutes will it take Jane to walk from her house to the park? 

0.3/3 = 0.1 hour

0.1 x 60 = 6 minutes.


400

In Lynwood, it costs $2.25 to ride a bus as an adult. In London, it costs 1.75 Pound to ride a bus. Which one is cheaper? Hint: 1 British Pound = $1.24

$2.25 = 1.82 Pound or 1.75 Pound = $2.16

London bus fare is cheaper

400

Kate and Nelson went to DC for a vacation. They arrived at night and decided to just have dinner and call it a day. Their bill came in a total of $85.80 without tax. With sale tax, the total became $90.95. What is the DC sale tax rate?

Around 5.6%. Exact answer is 6%

400

A family, mother, father, 2 kids over 10, wants to spend 2 days in Disney Land. A ticket for 10+ for 2 day is $280. They also choose Park Hopper option that is $65 per tickets. How much money will the family spend on purchasing the tickets? Knowing Anaheim sale tax is 7.75%.

($280+$65) x 4 = $1380 

$1380 x 7.75% = $106.95

$1380 + $106.95 = $1486.95 

500

Ms. Vu spent $96.72 for groceries in Seattle, her friend spent $100.34 for groceries in San Diego. The cost did not include sale tax. If Seattle sale tax is 10.6% and San Diego sale tax is 7.75%, who spent more at the end?

Ms. Vu spent $106.97; her friends spent $108.12. Ms. Vu's friend spent more.