00:01
Hi, today we are solving the question in which let x be the cost of a bag of dog food and y be the cost of a bag of cat food.
00:28
So, here according to the given information writing the equation.
00:34
So, here frank from here we can take frank equation will be 6x plus 7y is equals to 74 .50 and for daisy the equation will be 3x plus 9y is equals to 67 .50.
01:01
Now solving the system of coefficients.
01:05
So, we can we can multiply equation first by equation first by 1 and here it can be multiplied by 2.
01:29
So, solving the system of equation we can write 6x plus 18y is equals to 135.
01:43
Here it is 67 .50.
01:49
So, from here solving both the equation and subtracting it we get it as 6x plus 7y is equals to 74 .50.
02:07
Now subtracting both equation.
02:10
So, 6x and 6x will get cancelled and here we can take it as 11y is equals to 60 .50...