Question

Solution:
6x
When the gain is 15%, then S.P. =
5
When the gain is 20%, then S.P. = (30 + 20% of x) =
Now, the difference between the two S.Ps = 3575
6x 23x
X
= 575 3 = 575 = x = 20 x 575 = 11500
5 20
20
The cost price of the set is 11500.
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EXERCISE 7 A
1. Find the gain or loss per cent, when:
(ii) C.P. = 126, S.P. = 94.50
(i) C.P. = * 750, S.P. = 875
(iv) .C.P. = 58.75, S.P. = 51.70
(iii) C.P. = 380.40, S.P. = 68.34
2. Ranjit purchased an almirah for 5248 and paid 127 for its transportation. He sold it for 3 6020.
Find his gain or loss per cent.
3. Ahmed purchased an old scooter for 14625 and spent 3225 on its repairs. Then, he sold it for
16422. Find his gain or loss per cent.
4. A man buys two cricket bats, one for 1360 and the other for 1040. He sells the first bat at a gain
of 15% and the second one at a loss of 15%. Find his gain or loss per cent in the whole transaction.
5. Nandlal bought 20 dozen notebooks at 156 per dozen. He sold 8 dozens of them at 10% gain and
the remaining 12 dozens at 20% gain. What is his gain per cent in the whole transaction?
6. Heera bought 25 kg of rice at 48 per kg and 35 kg of rice at 60 per kg. He sold the mixture at
66 per kg. Find his gain per cent.
4
7. If the selling price of an article is = th of its cost price, find the loss per cent.
5
8. If the selling price of an article is 1 of its cost price, find the gain per cent.
3
9. A man sold a table for 2250 and gained one-ninth of its cost price. Find :
(i) the cost price of the table
(ii) the main​

Answer 1

Answer:

YOU SHOULD NOT GIVE MANY QUESTIONS IN ONE