math questions

1) If x is 25% more than y, then y is______________
x = y * 125%
y= 80% x
2) Herbert bought 80 pears at $120 and then sold all of them at $20 for 10. What was the profit or loss percent?

$120 / 80 = $1.50 (each pear cost)
Cost of 10 pears @$15
Sold 10 pears @$20
Profit on cost in percent = ($20-$15) / $15 * 100%
= $5 / $15 * 100%
= 33.33% profit on cost
Profit on Sell price in percent = ($20 - $15) / $20 * 100%
= $5 / $20 * 100%
= 25% profit on Sell price
3) The marked price of an article is 40% higher than its cost and it is now sold at a discount of 10%. What is the profit percent?
Marked price = cost *140% = 140% of cost
Discount = cost * 140% * 90% = 126% of cost
Profit on Cost percent = 26%

1) 1.25x
2)profit=20X8 - 120
=160 - 120
=$40
3)(1.4X0.9 - 1)X100%= (1.26 -1)X100% =26%