The ratio of X : Y : Z is 3 : 7 : 12.The ratio of X : Y : Z is 3 : 7 : 12.

If Y is 36.4 shorter than Z, what is If Y is 36.4 shorter than Z, what is

the total length of X, Y and Z?the total length of X, Y and Z?

Qn 1

The ratio of the number of boys to thenumber of girls in the hall was in the ratio 3: 8. When 50 girls entered the room, the ratio of the number of girls to the number of boys became 7:2.How many children were there in the hall at first?

Qn 2

A table cost $56 and a chair cost $16. Mrs Lee bought a total number of 72tables and chairs and paid $1952. How many tables and how many chairs did she buy?

Qn 3

Look at the number pattern below

3, 9, 18, 30,

Find the 12th term.Find the 48th term

Qn 4

Patrick had a sum of money.

On the first day, he spent of the money and donated $30 to charity.

On the second day, he spent of the money he still had and donated $20 to charity.

On the third day, he spent of the money he still had and donated $10 to charity.In the end, he had $10 left.How much did he have at first?

2

1

3

14

1

Qn 5

Suppose all counting numbers are arranged in columns as shown below. Under what column

letter will 1000 appear?

A B C D E F G1 2 3 4 5 6 78 9 10 11 12 13 1415 16 17 18 19 _ _

Qn 6

Qn 7A woman spent two-thirds of her money.She lost two-thirds of her money and then had $4 left. How much money did he have at first?

During a school year, a student was given an award of 25 cent for each math test he passed and was fined 50 cent for each math test he failed. At the end of the school year, the student had passed 7 times as many tests he failed, and received $3.75. How many tests did he fail?

Qn 8

When Anne, Betty and Cynthia compared the amount of money each had, they discovered that Anne and Betty had $12 together, Betty and Cynthia together had $18 and Anne and Cynthia together had $10. Who had the least amount of money and how

much was it?

Qn 9

In a math contest of 10 problems, 5 points was given for each correct answer and 2 points was deducted for each incorrect answer. If Nancy answered all 10 questions and scored 29 points, how many correct answers did she have?

Qn 10

Simon and Barry had a total of $40. Simon spent one-third of his money and Barry

spenttwo-fifths of his money.They then had $25 left altogether.

a) How much money did Simon have at first? b) How much money did Barry have left?

Qn 11

Qn 12A, B and C are 3 numbers.The ratio of A to (B + C) is 1 : 4The ratio of (A + B) to C is 5 : 1Find the ratio of A : B : C.