Question

Two persons could fit new window in a house in 3 days.
a) One of the persons fell ill before the work started. How long would the job take
now?
b) How many persons would be needed to fit the window in one day?
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Answer 1

Hope this answer helps you

Answer 2

Answer:

Solution:

On increasing the number of persons, less time will be required to complete a job.

Thus, the quantities are in inverse proportion.

Number of persons Number of days

2 3

(i) 1(2 – 1) x

(ii) y 1

(i) Let the required number of days be x.

x1y1 = x2y2

2 × 3 = 1 × x

x = 6

Hence, the required number of days = 6

(ii) Let the required number of persons be y.

x1y1 = x2y2

2 × 3 = y × 1

y = 6

Hence, the required number of persons = 6.

Step-by-step explanation: