Question

1)A number 40.80 is wrongly read as 40.08. Find the error percentage.
2)Find the least number by which 154350 be divided so that the resulting
number is a perfect square. Also find the square roof of the resulting
number. 3) A shopkeeper sells an article at 15% gain. Had he sold it for Rs 24 more,
he would have gained 20%. Find the cost price of the article.





Please please answer these questions

Answer 1

2)154350=5×5×2×3×3×7×7×7

The prime factors 2 and 7 are not in pairs .

Therefore 2×7=14 is the least no. to be divided

The new no. perfect sq. is 154350÷ 14=11025

Square root of 11025 is 105

HOPE THIS HELPS!!!!!