Directions: Read the following information to answer the question.
Let the number be x. Then X/7 - x/11 =100 11x-7x = 7700 x=1925.
Directions: Read the following information to answer the question.
Answer:7
Explanation: 87-3=84
122-3=119.
Hcf of 84 and 119 is 7.
Hence proved.
Directions: Read the following information to answer the question.
Answer:0
Solution:unit digits are 5,4,8,7 respectively
So onsolving we will get 0 as unit digit.
Directions: Refer the following data to answer the questions given below.
Milk in 1 litre mixture of A = 4/7 litre.
Milk in 1 litre mixture of B = 2/5 litre.
Milk in 1 litre mixture of C = 1/2 litre.
By rule of alligation we have required ratio X:Y
Directions: Refer the following data to answer the questions given below.
SOLUTION
S.P. of 1 kg of the mixture = Rs. 68.20, Gain = 10%.
C.P. of 1 kg of the mixture = Rs.{100/110}x 68.20= Rs. 62
BY the rule of alligation, we have :
Cost of 1 kg tea of 1st kind Cost of 1 kg tea of 2nd kind
Rs. 60 Rs. 65
Mean Price
Rs. 62
3 2
Required ratio = 3 : 2.