Transcript File

Qn 1
The ratio of X : Y : Z is 3 : 7 : 12.
If Y is 36.4 shorter than Z, what is
the total length of X, Y and Z?
Qn 2
The ratio of the number of boys to the
number 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 3
A table cost $56 and a chair cost $16.
Mrs Lee bought a total number of 72
tables and chairs and paid $1952. How
many tables and how many chairs did
she buy?
Qn 4
Look at the number pattern below
3, 9, 18, 30,
Find the 12th term.
Find the 48th term
Qn 5
Patrick had a sum of money.
1
of the money and donated $30 to charity.
4
1
On the second day, he spent
of the money he still had and donated $20 to
3
charity.
On the first day, he spent
1
On the third day, he spent
of the money he still had and donated $10 to
2
charity.
In the end, he had $10 left.
How much did he have at first?
Qn 6
Suppose all counting numbers are arranged in
columns as shown below. Under what column letter
will 1000 appear?
A
1
8
15
B
2
9
16
C
3
10
17
D
4
11
18
E
5
12
19
F
6
13
_
G
7
14
_
Qn 7
A 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?
Qn 8
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 9
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 10
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 11
Simon and Barry had a total of $40.
Simon spent one-third of his money and Barry spent
two-fifths of his money.
They then had $25 left altogether.
a)
b)
How much money did Simon have at first?
How much money did Barry have left?
Qn 12
A, B and C are 3 numbers.
The ratio of A to (B + C) is 1 : 4
The ratio of (A + B) to C is 5 : 1
Find the ratio of A : B : C.