Question
The cost of 3 apples and 2 bananas is Rs.46, and the
cost of 5 apples and 4 bananas is Rs.82. What is the total price (in Rs) of 2 apples and 3 bananas?Solution
Let the price of one apple be x, and the price of one banana be y. 3x+2y=46 Â Â Â Â Â Â (Equation 1) 5x+4y=82 Â Â Â Â Â Â (Equation 2) Â Eliminate one variable Multiply Equation (1) by 2 Â 6x+4y=92 Â Â Â Â Â Â (Equation 3) Now subtract Equation (2) from Equation (3)- Â (6x+4y) -(5x+4y) = 92-82 x = 10 Substitute x = 10 back into Equation (1) 3(10) + 2y = 46 Â 30 + 2y = 46 2y = 16 y = 8 Calculate the price of 2 apples and 3 bananas =2x + 3y = 2(10) + 3(8) = 20 + 24 = 44 So, the total price of 2 apples and 3 bananas is 44.
The seed multiplication ratio of rapeseed, red gram, hybrid maize, sorghum and jute is:
Which of the following is a key principle of industrial relations?
Which of the following is formed by the action of chlorine on dry slaked lime?
If in a population the natality is 50 and mortality is 80, in a span of 10 years. What is the growth rate (GR) of that population?
A seller marked his article 70% above the cost price and sold it after offering two successive discounts of 60% and 25% respectively. In the whole trans...
The first wage board in India was constituted in the year:
Which of the following grants/grant direct credit assistance to rural households?Â
1) Regional Rural BanksÂ
2) National Bank for Agricul...
In this question, a group of numbers/symbols is coded using letters as per the table given below and the conditions which follow. The correct combinatio...
The magnetic quantum number with respect to an atom of a chemical element is related to?
The Indian Standard Time (IST) remains how much ahead from Greenwich Mean Time (GMT)?
Relevant for Exams:
