Question
Find the value of 'x' and 'y' in the following
equation: 8x - 3y = 58 5x + 2y = 106Solution
ATQ,
8x - 3y = 58 ---------- (I)
5x + 2y = 106 -------- (II)
On solving, equation I - (8/5) X equation II,
We get, 8x - 3y - (8/5) × (5x + 2y) = 58 - (8/5) × 106
Or, 8x - 3y - 8x - (16/5)y = 58 - 848/5
Or, (-3y - 16/5y) = (290 - 848)/5
Or, (-15y - 16y)/5 = -558/5
Or, -31y = -558
Or, y = 18
On putting value of 'y' in equation I,
We get, 8x - 3 × 18 = 58
Or, 8x - 54 = 58
Or, 8x = 112
Or, x = 14
6106.11 ÷ √? × 55.9 = 3976.21 Â
The monthly savings of three individuals 'P', 'Q', and 'R' are such that the average savings of 'P' and 'Q', 'Q' and 'R', and 'R' and 'P' are Rs. 2,000,...
766/51 ÷ 387/42 × 121/13 = ?
Which of the following options is the closest approximate value which will come in place of question mark (?) in the following equation?
26.52 ×...
149.98% of 199.91 + 49.98% of 312.01 = (? - 26.01 + 65.99) × 5.98
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
A certain sum of money invested at R% p.a. fetches a compound interest (compounded annually) of 1620 and simple interest of Rs.1500 at the end of 2 year...
 (108.999)² - (102.001)²=?
?% of (112.31 ÷ 13.97 × 90.011) = 359.98
? × [(16.87) 2 – (6.98) 2 ] = 5.04× 191.11
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