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Let first number be 6x and the second number is 7x. According to the question, => (6x + 9)/(7x + 9) = 9/10 => 60x + 90 = 63x + 81 => x = 3 Required difference = 7x – 6x = x = 3
The respective ratio of incomes of A, B and C is (2x-1): (x+1): 3x. If A gets ₹2400 less than C, then what is the income of B?
Ratio of present ages of mother and her son is 24:8 respectively. Father’s present age is 14 years more than that of mother. If the present average ag...
If the SP of book is 5 times of the discount. If percentage discount and percentage profit is equal. Then find the ratio of discount and CP?
Mohini's Biology test had 250 questions i.e., 20 Macromolecules, 60 Homeostasis and 70 Immunology questions. Although she answered 70% of the Macromolec...
There are 15 numbers such that average of first 12 numbers is 30 while the average of last five numbers is 50. Find the 12th number, if the ratio betwee...
In a class, the ratio of number of boys to that of girls was 7:6 and total number of boys was 1960. When some more boys joined, the ratio became 8:7. Fi...
A classroom has a ratio of male to female students as 2:3. If 4 male and 6 female students join, the ratio of female to male students becomes 5:3. Find ...
