Question

. Shalinitai bought some articles each costing rs 150 and some other articles
each costing rs 80. In all she spend rs 3000 for buying 27 articles. How many
articles did she buy costing rs 80?
the answer is 50 but how pls solve my question​

Answer 1

Answer:15

Step-by-step explanation:

Let x be the no of 150 articles

Let y be the no of 80 articles

x+y=27

X=27-y

150x+80y=3000

150(27-y)+80=3000

4050-150y+80y=3000

-70y=-1050y

Y=15