2. There are 12000 soldiers in an army,
some of whom are Indians and the rest
are European. The average height of a
European soldier is 1.80 m, that of an
Indian soldier is 1.75 m, and the length
47
of the entire army is 1 m. So, how
60
much are the Indian soldiers ?
(B) 8000
(A) 6000
(C) 1000
(D) 4000
Answers
Answered by
2
Step-by-step explanation:
Correct Option: A
Let the number of members of Indian army be n.
∴ Number of European army = 12000 – n.
According to the question,
⇒ 5
9
× n + 5
10
× (12000 - n)
12 12
12000
= 5 39
48
⇒ 69n + 70 × 12000 - 70n
12 12 12
= 279 × 12000
12
⇒ 69n + 840000 – 70n = 837000
⇒ n = 840000 – 837000 = 3000
Answered by
2
Step-by-step explanation:
CORRECT OPTION = A
Hope it helps you
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