Answer Posted / s.rajendran
Given:
y/x = 1/3
x+2y = 10
Solution:
if y/x = 1/3, then
x = 3y
therefore, 3y + 2y = 10
so, y = 10/5 = 2
substitute y = 2 in x + 2y = 10
therefore, x + 4 = 10
it gives the answer x = 6
x = 6.
| Is This Answer Correct ? | 5 Yes | 2 No |
Post New Answer View All Answers
A certain type of mixture is prepared by mixing brand A at Rs.9 a kg. with brand B at Rs.4 a kg. If the mixture is worth Rs.7 a kg., how many kgs. brand A are needed to make 40kgs. of the mixture?
A certain type of mixture is prepared by mixing brand A at Rs.9 a kg. with brand B at Rs.4 a kg. If the mixture is worth Rs.7 a kg., how many kgs. of brand A are needed to make 40kgs. of the mixture?
There are 5 questions based on a murder story.the questions concentrate on the seating arrangements of people mentioned.
How many rational numbers are there between 0 & 5?
A sales person multiplied a number and get the answer is 3, instead of that number divided by 3. What is th answer he actually has to get? 1/3
Concentrations of three wines A, B and C are 10, 20 and 30 percent respectively. They are mixed in the ratio 2 : 3 : x resulting in a 23% concentration solution. Find x.
Olympic race : 4 contestants : Alan,charlie, Darren ,Brain. There are two races and average is taken to decide the winner.one person comes at the same position in both the race. Charlie always come before darren. Brian comes first once. Alan comes third at least once. Find the positions. Alan never comes last. Charlie & darren comes 2nd at least once.
If D is adjacent to F then who is adjacent to C?
(998-1)(998-2)(998-3).....(998-n)= ? when n>1000
The ratio of cost price to the market price of an article is 4: 5. What is the profit percentage if the ratio of the profit percentage on selling the article to the discount allowed on it is 5: 4?
A person who decided to go weekend trip should not exceed 8 hours driving in a day Average speed of forward journy is 40 mph. due to traffic in sundays, the return journey average speed is 30 mph. how far he can select a picnic spot
What is the selling price of a car? If the cost of the car is Rs.60 and a profit of 10% over selling price is earned.
If the operation,^ is defined by the equation x ^ y = 2x + y,what is the value of a in 2 ^ a = a ^ 3
Find the correct meaning of the following phrase: To bite the dust
Person who decided to go to weekend trip should not exceed 8 hrs driving in a day. Average speed of forward journey is 40 miles/hour . Due to traffic in sundays ,in return journey average speed is 30mph . How far he can select a picnic spot ?
