Question

Observe the following statements:
a) One Covid 19 positive patient can
infect an average of 1.7 persons if left
unquarantined.
b) Success rate of keeping the patients
under quarantined immediately without
further infection be x%
c) On 1st June, India had approximately 1
Lakh active Covid 19 cases.
Find the integer nearest to x so that the
active cases do not increase from the 1st
June level.​

a40
b41
c42
d43

Answer 1

Given : One Covid 19 positive patient can

infect an average of 1.7 persons if left

unquarantined.

To find : the integer nearest to x so that the

active cases do not increase from the 1st

June level.

Solution:

there should be recovery rate mentioned to find exact solution.

but seeing the options looks like user want solution as below

active cases 1st june = 100000

quarantined successfully = x%

= (x/100)100000 = 1000x

unquarantined = 100000 - 1000x

= (1000)(100 - x)

infected = 1.7 person

infected = 1.7 × 1000(100-x)

infected should be less than 100000

1.7 ×1000(100 - x) < 100000

1.7 (100 - x) < 100

170 - 1.7x < 100

1.7x > 70

x > 70/1.7

x> 41.17

x = 42

rate of keeping the patients

under quarantined immediately without

further infection be 42 %

x = 42

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