I. 2x2– 5x – 63 = 0
II. 2y2– 7y – 72 = 0
I. 2x2 – 5x – 63 = 0 2x2 + 9x – 14x – 63 = 0 x (2 x + 9) – 7 (2 x + 9) = 0 (x – 7) (2 x + 9) = 0 x = 7, -9/2 II. 2y2 – 7y – 72 = 0 2y2 – 16 y + 9y – 72 = 0 2 y(y – 8) + 9 (y – 8) = 0 (2 y + 9) (y – 8) = 0 y = 8, -9/2 Hence, relationship cannot be established between x and y
The marks obtained by A is 25% more than B, and the marks obtained by C is 144 more than the difference of the marks obtained by A and B. If C obtained ...
Monthly income of A is Rs. 60000 out of which he spent 22%, 9% and 24% of his total income in rent, medicine and transportation, respectively. Find his ...
Suyash have total amount of Rs.2600 out of which, he spent 30% on food, 45% of the rest on travelling. Out of remaining amount he spends Rs.561 on misce...
Monthly income of A is Rs. 75000 out of which he spent 23%, 16% and 28% of his total income in rent, medicine and transportation, respectively. Find his...
In an election there are a total of 4,000 registered voters out of which x% of voters did not cast their votes and 180 votes are declared invalid. The w...
In a college election a candidate who got 40% of the total votes polled was defeated by 126 votes. Assuming that there were only two candidates in the e...
In a zoo, 40% of the people are males. 50% of the remaining are females and the remaining 570 are children’s. Find the total number of people in a zoo...
A company allowed 9% commission on the total sales made by salesman and a bonus of 1% on the sales over Rs. 20000. If the salesman deposited Rs. 63200 i...
A Company allow 8% commission on the total sales to its salesman but if the salesman is appointed on a fix salary of Rs. 10000 and 6% commission on the...
A fruit seller bought 186 bananas at the rate of ₹72 per dozen. He found that 36 bananas were rotten and could not be sold. He sold the remaining ban...