Question
The cost of 3 notebooks and 2 erasers is Rs.47, and the
cost of 5 notebooks and 4 erasers is Rs.83. What is the total price (in Rs) of 2 notebooks and 3 erasers?Solution
let the price of one notebook = x and the price of one eraser = y ATQ- 3x + 2y = 47 .... (1) 5x +4y = 83 ......(2)  Eq (1) multiplied by 2 6x +4y = 94     … (3) Now subtract Equation (2) from Equation (3): 6x-5x = 94-83 x = 11 put the value of x in eq (1) y =7 now price of 2 notebook + 3 erasers =2× 11+3×7= 43
According to Fourth advance estimates for 2021-22 of major agriculture crops, the total production of Rice during 2021-22 is estimated at ___
Neutron scattering technique of soil water measurement is not suitable for
Name the training system in which the main stem is allowed to grow only up to a certain height of about 1.5 to 1.8 m and then it is cut for development ...
Name the process of formation of seeds without the act of fertilization is known as?
Awn character in rice (awn & awnless) is an example of ____
Which alkaloids isolated from Periwinkle have significance in cancer therapy?
World Food Safety Day is observed on 7th June every year. The theme for the year 2022 was_____
The slope of the demand curve is
Cropping frequency up to two, big size ponds & moderate stocking rate are the characteristics of:
If the increase or decrease of one product increases or decreases the other product, the relationship between both the products is known as:
Relevant for Exams:
