A shopkeeper buys 6 lit milk at the rate of RS 325 per liter. he buys 9 lit milk at RS 300 per liter. He mixes both type of milk . in what ratio he mixes water in it so that mixture worth become RS 270 per liter?
A. 27 : 4
B. 4 : 27
C. 31: 4
D. 4 : 31
Average of five digit positive numbers is 38. the second number is 10 more than the first number and 20 more than the third number . the value of the fourth number is 34. if the sum of the first and the last number is 76. what is the value of the first number?