A photographer offered to supply 3 copies of a photograph for Rs. 12 a

1.	A photographer offered to supply 3 copies of a photograph for Rs. 12 and 1for Rs. 30 and he estimated that his profit would be Rs. 4 and Rs. 9 resp.For what sum should be supply 30 copies in order to gain Rs. 13 as profit.
Answer» answer will be 105.0 for thus 1 unit = 1 rs100 unit = 120 rs but he sells 80 unit 120 rs one day :- 96 unit 120 rs so, 96X% = 120-96=> 9625% = 24 25% = answer

A photographer offered to supply 3 copies of a photograph for Rs. 12 and 1for Rs. 30 and he estimated that his profit would be Rs. 4 and Rs. 9 resp.For what sum should be supply 30 copies in order to gain Rs. 13 as profit.

Answer»

answer will be 105.0 for thus

1 unit = 1 rs100 unit = 120 rs

but he sells 80 unit 120 rs

one day :- 96 unit 120 rs

so, 96*X% = 120-96=> 96*25% = 24

25% = answer