Sol
gain or loss on the whole transaction.
13. A dishonest shopkeeper professes to sell pulses at cost price, but he uses a false weight of 940 gm
for
one kilogram. Find his gain per cent.
14. A man bought two computers for 45000. He sold one at a loss of 5% and the other at a profit of 5%.
If the selling price of each set is same, find the cost price of each set.
Answers
Answer:
(13)The cost price be: Rs x/kg
So, cost price of 1 kg: Rs x
⇒ Cost price of 940g = Rs. 0.94x
⇒ Selling price of 1 kg = Rs x (since he professes to sell at cost price)
⇒ But, for Rs x he has sold only 940g, so he makes a profit on the cost price of 940g
Hence profit made = Rs x – 0.94x = Rs. 0.06x
Profit per cent = (0.06/0.94 )× 100 = 6.38
(14) solution: CP are 100x & 100y
100x + (5/100)100x = 105x
100y - (5/100)100y = 95y
105x = 95y
=> 21x = 19y
100x + 100y = 45000
=> x + y = 450
x + y = 450
21x = 19y
=> 21x = 19(450 - x)
=> 40x = 19 * 450
=> 4x = 19 * 45
=> 4x * 25 = 19 * 45 * 25
=> 100x = 25 * 19 * 45
=> 100x = 21375 Rs
100x + 100y = 45000
=> 100y = 23625 Rs
Cost price are Rs.23625 and Rs.21375
Step-by-step explanation:
I hope you satisfy with my answer