Speed of the motorboat upstream = 40/(5/4) = 32 km/hr Let the speed of the current be x km/hr ⇒ 36 – x = 32 ⇒ x = 4 km/hr Speed of motor boat downstream = 36 + 4 = 40 km/hr Time taken to cover 40 km at 40 km/hr = 40/40 = 1 hour
The ratio of A and B present age is 7:3. The product of their ages is 8400. What will be the ratio of their ages after 4 years?
At present Meena is eight times her daughter’s age. Eight years from now, the ratio of the ages of Meena and her daughter will be 9 : 2 respective...
The current average age of three friends, Aravi, Bipasa, and Chinu, is 24 years. The ratio of Chinu's and Diksha's present ages is 4:5, and Bipasa's cur...
18 years ago the average age of a family of four members was 45 years. Two children were born in that span of 18 years. The present average age of the f...
The total age of A, B and C seven years hence will be 85 years. Find the age of C seven years hence, if the present age of A and B is 30 years and 22 ye...
A school has 8 teachers and 4 administrators. The average age of the teachers is 40 years, and the average age of the administrators is 55 years. After ...
The vice-captain of a cricket team of 11 members is 24 years old and the opener is 5 years older. If the ages of these two are excluded, the aver...
The present age of A is 5/3 times to that of his marriage age. Present age of his brother is 1/3rd of his present age. If A was married 24 years ago the...
The combined current ages of A, B, and C amount to 75 years. Five years from now, A's age compared to C's will be in the ratio of 5:7. Currently, B is 2...
The ages of A, B and C together are 64 years. B is twice as old as A and C is 4 years older than A. What is the difference between ages of B and C?
