Two numbers are in the ratio of $4:9$. If the larger number is $35$ more than the smaller number,then the product of the numbers is

If $a: b = 3: 5$ and $b: c = 4: 7,$ then $a: c$ is equal to

In a college,$150$ students of $MBA$ are enrolled. The ratio of boys to girls is $7:8$. There are three disciplines in the college,namely,Marketing,$HR$,and Finance. In the Marketing discipline,there are $50\%$ girls of their total number and the boys are $40\%$ of their total number. In the $HR$ discipline,girls are $30\%$ of their total number while boys are $30\%$ of their total number. The Finance discipline has girls $20\%$ of their total number and the boys are $30\%$ of their total number. $7$ boys and $9$ girls are in the $HR$ and Marketing both. $6$ boys and $7$ girls are in the $HR$ and Finance both. $5$ boys and $8$ girls are in the Marketing and Finance both. $2$ boys and $3$ girls are enrolled in all the three disciplines. What percentage of students are enrolled in all three disciplines?

If $5A = 12B = 13C$,find $A:B:C$.

The fourth proportional to $0.2, 0.12$ and $0.3$ is

The ratio of the speeds of Aman,Kamal,and Manan is $4: 5: 6$ respectively. What is the ratio of time taken by Aman,Kamal,and Manan respectively to cover the same distance?