IBPS Government Jobs Exams Numerical Ability Algebra

If 2x + 3y + z = 55, x+ z- y = 4 and y - x + z = 12, then what is the value of y ?
A)7 B)8 C)12 D)9 E)None of these

Read Solution (Total 1)

y=11 by solving equation2 and equation3 we get z=8
by solving equation1 and equation2 we get x+4y=51 -----(4)
when we substitute z=8 in equation 2 we get x-y=-4 -----(5)
by solving equation 4 and 5 we get y=11
4 years agoHelpfull: Yes(0) No(0)

IBPS Other Question

Sumer invested an amount of Rs. 50,000 to start a software business. After six months Nilay joined him with an amount of Rs. 80,000. At the end of 3 years they earned a profit of Rs. 24,500/-. What is share of Sumer in the profit ?
A)Rs. 14,000 B)Rs. 9,423 C)Rs. 10,250 D)Rs. 12,500 E)None of these Ratio of the earnings of A and B is 4 : 7. If the earnings of A increase by 50% and the earnings of B decrease by 25% the new ratio of their earnings becomes 8 : 7. What is earning of A?
A)Rs. 26, 000 B)Rs. 28, 000 C)Rs. 21, 000 D)Data inadequate E)None of these