曦日僑華
-期星
育教撟華養三第張七第日九廿月二年申庚曆夏
WAH KIU YAT PO
?對於在这些科目在做族成能的學生,是否會推
|校紧接站赞椵平城盛定國號勵學生修業此類學科,
離原校,他們在高中越王科或實用科自
之中 業概
藏
且很篇,接癮一
保
持
雄精
類和力
全校的酸海染及 的試野間先射
日四十月四年〇八九一歷公年九十六國民華中
中三試與工藝科
教育週
的比重問題。隨後報戰又再刊登教育蹲的心, 一出在來年舉行的初中成核評核辦法内造工科目,以?
本
及出版中院港
教
7
1980
中學會考試題預習專欄
新數學(廿八)
明德出版社魯榮家提供資料
MODERN MATEMATICS (28)
J. K. Lo
REVISION TEST
PABER I
me allowed: 2 hours and
30 minutes
Answer ALL questions în SECTION A and ANY SIX în
SECTION 3.
SECTIONA
101922
In figure
BC, EF and
DA ere parallel BC
2AD If the area of
the 2
AADE is 4 ca, find (a) the area of ABEC (b) the area of A EAF
Figure 1
A sells an article to B
at a gain of 20%. B sells it to C at a loss of 10%. If C paid $3600 more than it cost.
A, find
(a) how much A, B and C
respectively paid for the article. (b) the respective pro-
fits for A and B.
Find the values of
R such that
If x varies inversely
las y find the percen-
tage change in x wh
when z is increased by 105. (Answer correct to significant figures
In the figure, 0 IS: the
centre of the circle ACB-15° and A
find the area of the
shaded region. (Take
Figure 2
8. Find the equation of!
the circle which has diameter with ends (2,2) and (4,
SECTION B (60%).
9. In a geometric progres-
sion, the second tera
is 6 and the sum to in- finity is 27. If the
112.
common ratio of this progression is less
than
(a) find the first term
of the progression. (b) how many terms of
the progression must be taken so
that the sum is greater than 26.9.
The table shows the dis-
of a man who tra- lled 10 miles from A
Represent graphically
the above data. ❤
(b) By making use of
the graph plotted in (a), find when andere he met.
another man who
set out from B at
picked at randon
from those who
passed in English, find the probabili- ty that he also passed in Mathe- natics.
1:10 p.m. and tra- 13. The following table sh
velled at a steady
speed of 25 m. 1
to
Tergolate ABCD wing-
́ed in the vertical line
AD, is open through 40o Into the position
ABLOID.
++
VEISEER
gure
m high
If the gate ist and on wide, ind (a) the angle between
AC and AC
the angle which
makes with the plane ACC
鹿
150 students took exa inations in Biglish, Chinese and Mathematics.
25 passed in
Mees
and English, 15 passeds
in Chinese and Mathe-
matics, 10 passed in Mathematics and Eng- iish; 30 passed English only, 40 pass- ed in Chinese only; 20 passed in Mathematics only there are alto- gether 80 passed in English
(a) If a student is
picked at random, find the probabi-
lity that he pass-
Time
:00
Find the values of
1:05
and y if
1:10
27
1:15
and
1:20
815
1:25
1:30
1:3
3.8
7.2
3%
Find the values of the
rational numbers a and
all three sub-
jects (ill one subject.
only
no subject
If a student is
ows the results of 50
students in a mathe-
matics test.
Marks
Frequency
0-40
40-50
50-60
60-70-
14
70-80
80-90
90-100
(a) Find the mean score.
of the test
(b) Construct the corre-
sponding cumulative frequency polygon of the above frequency
distribution.
If 60% of students
passed in the test,
detersine, from
your c.f. polygon, the pass mark of the
test.
In figure 4, the strai ght line L cuts the circle C at P and
O is the centre of the
circle.
J. (0,14)
Figure 4
Find the equation
of L.
Find the equation of 0.
(c) Find the coordinates
of P and G.
In figure 5, ABCD is a rectangle. - E, Fare points on 30 and CD
respectively. If BC = 10 1, BA CFFD
BUY CAME
15 J
2 and
Figure 5
(1) Express Br, AF
and AM in terms
of
I and J.
(11) Find the lengths
of AM and BF.
(111) Prove that
LAMP is a right
angle.
(b) In addition, if
BE EC k:l, find
the value of k.
116. There are 2 types of
buses, 4 and 3, for
hire, The rent on each
bus A is $80, and on
each bus B is $60.
capacity of each bus is given by the table bel-
OW:
People Luggage.
36
140kg
15 200kg
Bus A
Bus B
In a school picnic, there are altogether 180 students and 1400
The
kg of luggage. If the most economical way is to hire x bus A and y
bus B
(a) write down the cost
in terms of x and
(b) write down the con-
straints for y and
y
plot, the solution
set of the con-
straints on the
graph provided (d) what are the values
of x and y.
(e) what is the cost.