Having FUN With MaThEmAtIcs
1. Write down the question in your Maths Exercise Book.
2. Solve the question.
3. Try solving the question using an alternative method.
Question (To be completed by 26/03/2012)
2/7 of Nora's money is equal to 1/5 of Jia Xuan's money.
The difference between Nora's and Jia Xuan's money is 1/3 of Siti's money. Siti has $180.
(a) What is the difference beween Nora's and Jia Xuan's money?
(b) How much do the 3 girls have altogether?
Question (To be completed by 20/03/2012)
The price of a chicken is ⅔ that of a duck.
Kenny sold 700 chickens and 100 ducks and collected $3400.
Find the price of each chicken.
The answer is $2.
ReplyDeleteHere is how to solve it:
Draw a model. The model will have 3 units. The chicken will have 14 units, you can imagine if you do not want to draw. If you do not want the original number to be so big, you can divide 700, 100 and 3400 by 100.They will be 7, 1 and 34. Because the price of a chicken is 2/3 that of a duck, so 7*2=14, the chiken will have 14 units. 3+14=17, this is the total number of units. 34/17=2. So, the answer is $2.
One more thing, without the explanation of my solution, it will be like this:
Delete700/100=7
100/100=1
3400/100=34
3+14=17 =Total no.of units
34/17=2 =The answer
The answer is $2.
ReplyDeleteHere is how to solve it:
(700*2）+(100*3)=1700
3400/1700=2
So,the answer is $2.
The answer is $4
ReplyDelete700*2=1400
100*3=300
1400+300=1700
3400*1700=2
2*2=4