Question
A train running at the speed of 35 metre per second
crosses a bridge in 30 seconds. Another which is 130 metre shorter than the previous train crosses the same bridge at the speed of 40 metre per second. Find the time taken by the second train to cross the bridge?Solution
Let the length of the bridge be x m and that of the first train be y m (x+y)/35 = 30 x+y = 1050 Again (x+(y-130))/40 = t (x+y-130)/40 = t (1050-130)/40 = t 920/40 = t t = 23 seconds
Marks scored by A and B in a test are in the ratio 12:5 respectively. If B had scored 5 more marks, then marks scored by A would be 20% more than that o...
The ratio of number of boys to number of girls of a class was 2:5. If 4 girls were absent, the ratio becomes 3:7. Find total number of students in the c...
A bag contains Re 1 and 50 paise coins in the ratio 2 : 3. While the ratio of 50 paise and 25 paise is 4:5. If the total value of these coins is Rs 177....
If p: q =1:3, q: r =2:1, r: s = 1:2, s: t =3:1 and t: u =1:4 then value of (p q r/s t u)3 =?
A quantity x is directly proportional to another quantity y. When x = 56, then y = 28. When y = 45, then find the value of x.
If ‘A’, ‘B’ and ‘C’ are in proportion in the given order while ‘A’ = 25 and ‘B’ = 50, then find the value of ‘C’.
...The ratio of the two numbers is 5:12. 120% of the first number is equal to the 30% of the second number. Find the sum of both the numbers.
A sum of Rs. 178 needs to be divided among 60 students in a class, where each boy receives Rs. 2.5 and each girl receives Rs. 3.5. Determine the ratio o...
84 is divided into two parts in such a way that the fourth part of the first part and the fifth part of the second are in the ratio 1 : 2. The first par...
A sum of Rs. 720 is divided among X, Y and Z such that X gets Rs. 124 more than Y. Y gets Rs. 64 more than Z. Find the share of Z?
Relevant for Exams:
