Sunday, April 30, 2006

How can ratio be used?

Ratio in recipes
Find a recipe and craft a ratio question for your friends to solve.

During shopping
Go to the supermarket and find out the cost of 5 items and use them to craft a ratio question for your friends to solve.

Question 1

My father had $50. He gave some of the money to my two sisters and three brothers in the ratio 4:5 and the rest to me. If I received $5, how much did each of my brothers and sisters get?

Question 4

My sister and I shared the cost of a playstation in the ratio 4:1. If my sister paid $330 more, what was the cost of the playstation?

Question 3

During a Science test, Peter scored 15 marks higher than Cindy. Cindy scored 5 marks higher than David. If their total marks are 220, find the ratio of Peter's score to Cindy's score to David's score.

Question 2

Henry, Kesigan and Junwei have a total of $60 in the ratio 3:5:4. If Kesigan gives $10 to Junwei, what is the new ratio of the amount of money the boys have?

Question 5

During a test, 60 students failed. If there were 320 students who took the test, find the ratio of the number of students who passed and the number of students who failed.

Question 7

An old woman dies, leaving some chickens, ducks and cows to his three daughters. A cow is worth 5 chickens while 3 chickens is worth 2 ducks. If there are 20 chickens, 10 ducks and 4 cows, how should it be divided so that the daughters get them in the ratio 3:2:1?

Question 6

The ratio of the number of stamps in my collection and Terry's is 7:8. Terry sold 1/4 of his stamps and was left with 18 stamps. Find the number of stamps in my collection.

Question 8

There are some rambutan, bananas and mangoes in a basket. The ratio of rambutans to bananas is 4:3 while the ratio of bananas to mangoes is 5:4. If the total number of fruit in the basket is 94, how many rambutans, bananas and mangoes are there in the basket?

Question 9

Gary weighs 60kg. His sister is 15kg lighter while their combined weight is twice that of their mother's. Find the ratio of their weights.

Question 10

Manchester united and Chelsea are having a friendly soccer match. The ratio of Manchester's to Chelsea's fans is 1:3. At half-time, 1/3 of Manchester's fans left the stadium. If the stadium has a capacity of 30 000 and is 3/4 full initially, find the number of people who are still left behind after half-time.