Question

(b) Parwati brought 60 glasses. 20 of them were broken. She sold the remaining glasses at the rate of Rs. 25 per glass making 20% profit. What was the cost price of one glass? Find it.​

Answer 1

Answer:

C.P OF 1 GLASS IS = 20 rs

20 glasses were broken out of 60

20 glasses were broken out of 60 remaining glasses= 60-20= 40

20 glasses were broken out of 60 remaining glasses= 60-20= 40sp of 1 glass= 25 rs

20 glasses were broken out of 60 remaining glasses= 60-20= 40sp of 1 glass= 25 rs sp of 40 glasses= 25×40= 1000rs

20 glasses were broken out of 60 remaining glasses= 60-20= 40sp of 1 glass= 25 rs sp of 40 glasses= 25×40= 1000rsprofit is 20% of 100= 20/100× 1000= 200rs

20 glasses were broken out of 60 remaining glasses= 60-20= 40sp of 1 glass= 25 rs sp of 40 glasses= 25×40= 1000rsprofit is 20% of 100= 20/100× 1000= 200rsc.p of 20 glasses= 1000-200= 800rs

20 glasses were broken out of 60 remaining glasses= 60-20= 40sp of 1 glass= 25 rs sp of 40 glasses= 25×40= 1000rsprofit is 20% of 100= 20/100× 1000= 200rsc.p of 20 glasses= 1000-200= 800rs c.p of 1 glass= 800/40= 20rs

20 glasses were broken out of 60 remaining glasses= 60-20= 40sp of 1 glass= 25 rs sp of 40 glasses= 25×40= 1000rsprofit is 20% of 100= 20/100× 1000= 200rsc.p of 20 glasses= 1000-200= 800rs c.p of 1 glass= 800/40= 20rs C.P OF 1 GLASS IS = 20 rs

Step-by-step explanation:

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Answer 2

0.3472 Rs

Principle 100 % + profit 20 % = 120 %

60 glasses sell in 120 % = 25 Rs

1 glass sell in 120% =

$\frac{25}{60} = 0.416$

therefore, cost of 1 glass =

$0.416 \times \frac{100}{120} = 0.3472$

cost of 20 glasses=

$0.3472 \times 60 = 20.832$

cost of 60 glasses with profit 20%=

$20.832 \times \frac{120}{100} = 24.9984$

ANS:0.3472 Rs