Question

TRAGATI TANUKU
JUNIOR SA: 13
40
4.
CHEMISTRY
31. The most acidie oxide of 2nd period element is:
1. NGOs
2.002
3.FO
'X' is an element which belongs to the first three groups of p-block. It forms wide
trong acid in water. Them X belongs to
1. III A group
2.IVA group
3 VA group
LA
38. Dingonal relationship is that shown by
1 Be Al
2. B-S
3 CP
34. Which of the followingis most acidie:
1. Mgo
2. Al₂O3
3. Cao
4. Nazo
los period E.N is highest for
1. Chalcogen
2. Halogen
Electronegativity on Mallikan scale is limited te
3. Both
1. Monovalent atoms 2 Bislama
37. Which of the following isoelectronie species has lowest first IP:
3.s?
38. The group
The group of elements with second highest LP
1.UA
The second period elements with exceptionally big IP values are
2. Ogroup
2.NO
Mad the fullowing​

Answer 1

Answer:

Let their salaries be 9x and 7x.

Let their expenditure be 4y and 3y.

According to the question,

9x−4y=2000           —(1)

7x−3y=2000            —(2)

From (1)

x=92000+4y              —(3)

On putting x in (2), we get

7×9(2000+4y)−3y=2000

9(14000+28y)−3y=2000

914000+28y−27y=2000

14000+y=18000

y=4000

Now, put y in (3)

x=92000+4×4000

x=92000+16000

x=918000=2000

So,

Salary of first person =9×2000=Rs. 18000

Salary of second person =7×2000=Rs. 14000

Hence, this is the answer.

Answer 2

Answer:

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