A reduction of 21% in the price of wheat enables a person to buy 10.5 kg more wheat for Rs.100. What is the reduced rate per kg?
Solution (By Examveda Team)
Let original rate = Rs. X per kgNew rate = 79% of Rs. X per kg
= Rs. (79 * X)/100) per kg
Now,
{(100/79X)/100} - {100/X} = 10.5
Or, 10000/79X - 100/X = 10.5
Or, 10000 - 7900 = 10.5 * 79X
So, X = 2100/(10.5 * 79)
Thus, X = 2100/(10.5 * 79)
Reduced rate = Rs. (79/100) * 2100/(10.5 * 79) per kg = Rs. 2 per kg.
This Question Belongs to User Ask Question >> Miscellaneous
21%=10.5 kh
10kg=20+ 1/5 kh =1 ... Taotal 21
Par kg= 2 ans.
10.5 Kg = 21% of 100
10.5Kg = 21
So, Reduced price per Kg,
= 21/10.5 = Rs. 2.