Question

a vendor bought 9 sweets for one Rupees at what rate should he sell it to gain 80%

Answer 1

9 sweets = 1 rupee
1 sweet = 1/9 rupee
cp =1/9
100% = 1/9
180%=x
100x = 1/9×180
100x=20
x=2/10
x=1/5
he sells 1 sweet at 5 rupees

Answer 2

Answer:

The selling price is Rs.0.2.

Step-by-step explanation:

Given : A vendor bought 9 sweets for one Rupees.

To find : At what rate should he sell it to gain 80% ?

Solution :

The cost of 9 sweets is Rs.1

The cost of 1 sweets is Rs.$\frac{1}{9}$

The gain percent is 80%.

The selling price of 1 sweet is

$SP=\frac{100+G\%}{100}\times CP$

$SP=\frac{100+80}{100}\times \frac{1}{9}$

$SP=\frac{180}{100}\times \frac{1}{9}$

$SP=0.2$

Therefore, The selling price is Rs.0.2.