Question

PROFIT AND LOSS
Q 1) cost price of air article is 90% of its selling price . find his profit percent
Q 2) a man sold an article for rs. 750 and gained one ninth of its cost price. find the c.p and gain percent earned by the man
Q 3) if the c.p of 15 tables be equal to the s.p of 20 tables ; find the loss percent.
Q 4) on selling 250 articles a man had a gain equal to the s.p of 25 articles . find the gain percent
Q 5) toffees are bought at the rate of 6 for a rupee and sold at 5 for a rupee. find the gain percentage.

Answer 1

1)let the SP be 100
100×90/100=90 =CP
profit=10
profit %= 10/90×100 %=100/9%

3)let the CP of 15 tables be 15
so,SP of 20 tables =15
and CP of 20 tables =20
loss=5
loss %= 5/20×100% =20%

4)let the SP of 250 articles be 250
so profit =25
CP= 250×100/100+25
CP=250×100/125
CP=200
gain %=25/200×100%=12.5%

sry i cannot solve Q 3and 5