review exercise 39 (subjective)

8/18/2019 Review Exercise 39 (Subjective)

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Review Exercise 39

Subjective Questions

1. A teacher marks 4 essays in one hour. Find

(a) the number of essays the teacher marks in 7 hours,(b) the time taken to mark 500 essays.

2. On average, a a!aysia adu!t consumes "4 kg of rice in one year. Find the rate of

consum#tion of rice in gram #er month.

3. A #rinting com#any #rints $ 500 #ages of re#ort in %0 minutes.

(a) &hat is the rate of #rinting #er hour'

(b) o many #ages of the re#ort are #rinted in one day'

(c) o !ong does it take to #rint ** 500 #ages of the re#ort'

4. +tate the s#eed for the fo!!oing situations.

(a) A bird f!ies over a distance of *.$ m in $ second.(b) A van moves 45 km in $ hour.

(c) A et f!ies over a distance of 7*0 km in $ hour.

(d) A go!f ba!! trave!s a distance of 50 m in $ second.

5. An aircraft trave!s at a s#eed of "00 km-h from ua!a /um#ur to ani!a.

(a) he distance beteen ua!a /um#ur and ani!a by air is * 500 km. 1a!cu!ate

the time, in hour and minute, taken by the aircraft to trave! from ua!a /um#ur

to ani!a.

(b) From ani!a, the aircraft de#arted for ai#ei at the same s#eed. 2f the time of

f!ight from ani!a to ai#ei is 4 hours, ca!cu!ate the distance beteen ani!a

and ai#ei by air.

6. 3etermine the distance covered in the fo!!oing situations.

(a) A shi# sai!s at an average s#eed of 7 km-h in 4 hours 45 minutes.(b) An e!ectric train trave!s at an average s#eed of *00 km-h in $ hour %0 minutes.

7. 1a!cu!ate the time taken for each of the fo!!oing situations.

(a) 3avid rides a horse at an average s#eed of 4" km-h for a distance of % km.

(b) anesan a!ks a distance of 6 km at an average s#eed of km-h.

8. urhan a!ks at an average s#eed of km-h for $5 minutes to his friends house and

then cyc!es at an average s#eed of $5 km-h for $4

$ hours. 1a!cu!ate

(a) the tota! distance trave!!ed,(b) the average s#eed for the ho!e ourney.

© Pearson Malaysia Sdn. Bhd. 2008 Essential Mathematics PMR1


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Review Exercise 39

9. he distance beteen a ta8i station and a hote! is *5 km. 2n a ourney, a ta8i took 40

minutes to arrive at the hote! from its station. 1a!cu!ate the average s#eed, in km-h, of

the ta8i.

10. 9ahman took 4 minutes to cyc!e from P to Q hich is %.* km a#art. e sto##ed at Q for % minutes before resuming his ourney to R. he distance from Q to R is *.4 kmand the time taken is % minutes. 1a!cu!ate the average s#eed for the ourney from

P to R.

11. A bus hich started from rest acce!erated to a s#eed of " m-s in seconds. Find the

acce!eration of the bus.

12. 1o#y and com#!ete the tab!e be!o.

13. o

tons

J and

M are

connected by a road of !ength 0 km. A ta8i trave!s from J to M at an average s#eedof "0 km-h. After sto##ing at M for *7 minutes, the ta8i returns to J ith an average

s#eed of 75 km-h. 1a!cu!ate the average s#eed of the ta8i for both the ourneys.

14.

© Pearson Malaysia Sdn. Bhd. 2008 Essential Mathematics PMR

2nitia! s#eed Fina! s#eed ime taken Acce!eration

(a) $0 m-s $" m-s $ s

(b) ** m-s *$ s%

$ m-s*

(c) 6 m-s $0 s :5

* m-s*

(d) *4 m-s *0 m-s :$5

* m-s*

&eek 9ate of renta! #er day

First 9"0

+econd 975

hird 90

Fourth 940

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Review Exercise 39

he tab!e shos the rate of renta! for a car charged by an o#erator.(a) ari! rented a car for $0 days. 1a!cu!ate the tota! amount of renta! he needs to

#ay.

(b) a!ek #aid a sum of 9$ 5 for renting a car. 3etermine the number of days

a!ek rented the car.

15. A van de#arted from ton G at $04* hours and arrived at ton K at $$%* hours.

iven that the average s#eed of the car for the ourney from G to K is $0" km-h.

1a!cu!ate the distance beteen G and K .

16.

he tab!e shos the readings of a ater meter, in !itre, for the househo!d of am;ah

in


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Review Exercise 39

18.

he diagram shos the #ositions of three tons hich are connected by a straight

road. At 0"%0 hours, a bus de#arted from G to N via L. he average s#eeds of the bus

for the ourney from G to L and from L to N are 0 km-h and "0 km-h res#ective!y.

1a!cu!ate

(a) the average s#eed of the bus for the entire ourney from G to N ,

(b) the time, in the *4?hour system, hen the bus arrives at N .

19.

he tab!e shos the rate of #ostage for #arce!s that are charged by a #ost office. Farid

has three #arce!s ith masses of $ kg, 4 kg and $5 kg.

(a) 2f Farid #osts the three #arce!s se#arate!y, ca!cu!ate the tota! amount he has to #ay.

(b) 2f Farid #osts the three #arce!s as one big #arce!, ca!cu!ate the amount of money

he i!! save.

20. he distance beteen @ukit ertaam and ua!a /um#ur by road is %0 km. At $0%0

hours, 3o!!ah de#arted from @ukit ertaam by car and arrived in ua!a /um#ur at

$5%0 hours. 2n the ourney, the car has consumed 50 !itres of #etro! amounting to96.

1a!cu!ate

(a) the average s#eed 3o!!ah drove his car in the ourney,

(b) the #rice of a !itre of #etro!.

© Pearson Malaysia Sdn. Bhd. 2008 Essential Mathematics PMR

ass =ostage

For the first $ kg 9*.50

For every additiona! $ kg 9$.00

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review exercise 39 (subjective)

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