Question

Hello gyus plss tell me why I can't solve this ques( ques is given with my half ans ) like that by this ans is not coming correct

Answer 1

Answer:

TV = 20000 Fridge = 10000

Step-by-step explanation:

We will substitute the TV as x and the fridge as y. For the first part we can write it as 5x/100 + 10y/100 = 2000. and the second part as 10x/100 - 5y/100 = 1500. We will use the elimination method so we multiply the first part by 2 to get 10x/100 + 20y/100 = 4000. We will subtract the 2 solutions to get rid of the x. 10x/100 + 20y/100 - 10x/100 + 5y/100 = (4000 - 1500) and we will get

25y/100 = 2500. 25y= 250000 and y = 10000. So we know that the fridge is 10000 and can just substitute y into the equations to find x. 5x/100 + 10*10000/100 = 2000 which can be simplified to 5x/100 = 1000. 5x = 100000 and x = 20 000. The TV is 20000 and the fridge is 10000