Question

By selling 40orange for rupee7,a vendor gained 5% . How many for a rupee did he buy ?

Answer 1

c.p of 1 orange =7

c.p of 40 oranges=40×7=280

gain=5%

s.p={(100+5)/100}280

=(105/100)280

=2940/10

=294

the required s.p=294

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Answer 2

Answer:

Sp of 1 orange = 700/40=70/4=17.5

Paise

c.p=17.5x100/105=16.67 Ps

No. of orange for one rupee =

100/16.67=6

6oranges for I rupee Ans