Question

Consumption of vitamin C, wearing mask, keeping safe distance helps to stay away

from Covid 19. Write a speech to be delivered in the morning online assembly on

the ‘ Covid19 prevention’​

Answer 1

Solution(By Examveda Team)

In Give Question,

A + B = 8 ---- (i)

A + C =13 -----(ii)

B + D = 8 ----(iii)

C - D = 6 ----(iv)

Therefore equation (i) and (iii) are equal

A + B = B + D

=> A = D

Therefore, equation (iv) can be C - A = 6 ----- (v)

Now solving equation (ii) and (v), We Get C = 9.5 and A = 3.5

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Put this value of A in equation in (i) B = 4.5 and value of C in equation (iv) we get D = 3.5

A = 3.5

B = 4.5

C = 9.5

D = 3.5

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