MATH DOSE 6

1. 360 m long train running with uniform speed, and cross the platform in 55 second and cross the man on platform in 24 second find the length of platform (Answer-465m)

2. The ratio of speed of A and B is 3:5 and A Take 24 minutes more than B to cover certain distance. what  time B will get to cover that same distance. (Answer- 36minutes)

3. A certain amount to 29282 in 4 years at 10% per annum when the interest compound annually. What will the interests on same sum same time and same rate but on simple interests. (Answer- 8000)

4. A wire in shape of rectangle whose side is in ratio of 7:4 initially shape in a circle whose radius is 31.5m find the length of smaller side of rectangle. (Answer- 36m)

5. Given four different number, the average of first 3 numbers is four time the fourth number and the average of all four number is 52. Find the average of first three numbers.   (Answer- 64)