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Water Bill class 9| Water Bill solved problem ex 4.2 | Vigyan TV Nepal







EXERCISE 4.21

1.

a) How many litres of water is to be consumed to make 1 unit?

b) According to water tariff rates of Nepal Water Supply Corporation, what is t

minimum charge up to 10 units for the consumption of water by using a half-in pipe? c) What is the minimum charge for the consumption of water up to 56,000 litres

using a 1" pipe according to NWSC? 2. a) The meter reading for the consumption of water in the previous month was 13 units and the meter reading of present month is 1400 units, find the consumed uni of water in 1 month.

b) The meter reading of consumption of water in 1 Baishakh was 6699 units and the of 1 Jestha was 7070 units, how many units of water was consumed in the month Baishakh?

c) On 1 Poush, the meter readings of water of a household is 1140 units and the household consumed 15 units of water in Mansir. What was the meter reading

1 Mansir?

3. a

) The water tariff rates fixed by Nepal Water Supply Corporation for the consumers using half-inch pipe are given alongside. Answer the following questions.

Minimum consumption

b

the

consur

given

follow

( 1) Ho

un

( ii) H

Creative se

4. a)

Mr.

reas

Aco

un

sev

Minimum charge (Rs)

Additional charge (Rs)

5.

10 units

Rs 110

Rs 25 per unil

Sewerage service charge: 50%

(1) How much should a household pay for the consumption of 15 units of water in month?

( ii) How much will be charged for a household for the consumption of 24 units

water in a month
Class

Name:......

Subject:

ddress:

School/Campus

f Rs 2.0

sued,

10%

b) Kathmandu Upatyaka Khanepani

Limited (KUKL) has implemented the water tariff rates for the consumers using half-inch pipe are given in the table. Answer the following questions.

Minimum

consumption

10 units

Household Arithmetic

Minimum charge (Rs)

Rs 100

Additional charge (Rs)

Rs 32 per unit

Sewerage service charge: 50%

(i) How much should a household of Kathmandu pay for the consumption of 18 units of water in a month?

(ii) How much will be charged for a household of Madhyapur, Thimi for the consumption of 40 units of water in a month?

Creative section

50% 4.

a) Mr. Upreti has a metered tap using half-inch pipe in his house in Banepa. The meter reading of his house on 1 Baishakh was 1050 units and on 1 Jestha was 1075 units. According to NWSC, the minimum charge up to 10 units is Rs 110 and Rs 25 per unit for additional consumption of water, and 50% of the total charge is to be paid as sewerage service charge. Answer the following questions.

at is

alf-in

litres

was 13

ed un

and t

month

and

ading

(i) How many litres of water is consumed in Baishakh month?

(ii) How much sewerage service charge should he pay?

(iii) Find the total bill including 50% sewerage service charge.

(iv) If he paid only Rs 465 for the consumption of water in Asar, how many units of

water was consumed in the month of Asar?

3" 4 b) Mr. Maharjan uses a pipe in his house in Kathmandu. The meter reading of his house on 1 Aswin was 2020 units and on 1 Kartik was 2050 units. According to KUKL, the minimum charge up to 27 units is Rs 1,910 and Rs 71 per unit for additional consumption of water, and 50% of the total charge is to be paid as sewerage service

charge. Answer the following questions.

(i) How many units of water is consumed in Aswin month?

(ii) How much sewerage service charge should he pay?

(iii) Find the total bill including 50% sewerage service charge.

(iv) If he paid only Rs 3,717 for the consumption of water in Falgun, how many units of water was consumed in the month of Falgun? nal 5. a) A household of Lahan consumed 32 units of water in a month by using half-inch pipe. Calculate the payment of the bill as per the rules implemented by NWSC

including 50% sewerage service charge, if the payment is made within the first

month of the bill issued.

(Rs)

er u

ater

unit

3 b) 127 units of water is consumed by using pipe in a hotel in Pokhara. If the payment

of the bill is made within the fifth month after the bill issued, how much money is required to clear the bill with 50% sewerage charge? Calculate it as per the tariff rates provisioned by NWSC.

pproved by Curriculum Development Centre, Sansthimi, Bhaktapur 79

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