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An average urban Indian uses about 150 litres of water every day. Activity Litres per person per day
Drinking 3
Cooking 4
Bathing 20
Sanitation 40
Washing clothes 40
Washing utensils 20
Gardening 23
Total 150
(a) What per cent of water is used for bathing and sanitation together per day
(b) How much less per cent of water is used for cooking in comparison to that used for bathing
(c) What per cent of water is used for drinking, cooking and gardening together

Solution:

(a) Percentage of water used for bathing and sanitation together is:

Sanitation = 40 litres

Bathing = 20 litres

Total litres used in sanitation and bathing = 40 + 20 = 60

Percentage used = (60/150) × 100 = 40%

(b) Water used in cooking = 4 litres

Percentage of water used in cooking = (4/150) × 100 = 2 ⅔%

% of water used in bathing = (20/150) × 100 = 13 ⅓%

Hence 10 ⅔ % points (13 ⅓% - 2 ⅔ ) less water is consumed for cooking when compared to bathing.

(c) Percentage of water is used for drinking, cooking and gardening together is:

Drinking = 3 litres

Cooking = 4 litres

Gardening = 23 litres

Total water used in activities of Drinking, cooking and gardening = 3 + 4 + 23 = 30 lites

% of water used daily for these activities = (30/150) × 100 = 20%

✦ Try This: An average urban Indian uses about 150 litres of water every day.

Activity Litres per person per day

Drinking 4

Cooking 6

Bathing 22

Sanitation 45

Washing clothes 50

Washing utensils 23

Gardening 30

________

Total 180

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 8

NCERT Exemplar Class 8 Maths Chapter 9 Problem 76

An average urban Indian uses about 150 litres of water every day. (a) What per cent of water is used for bathing and sanitation together, per day? (b) How much less per cent of water is used for cooking in comparison to that used for bathing? (c) What per cent of water is used for drinking, cooking and gardening together?

Summary:

(a) Percentage of water is used for bathing and sanitation together per day is 40%, (b) 10 ⅔% less per cent of water is used for cooking in comparison to that used for bathing? (c) 20% percent of water is used for drinking, cooking and gardening together

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