The ratio of the present ages of Suresh and Mahesh is $7:5$. If after $6$ years their ages will be in the ratio of $4:3$,the present age of Mahesh is (in $years$):

When $x$ is added to each term of $7: 13$,the ratio becomes $2: 3$. The value of $x$ is

If $0.6$ times one number is equal to $0.025$ times the other,what is the ratio of the two numbers (in $/24$)?

Two candles of the same height are lighted at the same time. The first is consumed in $8 \text{ hours}$ and the second in $6 \text{ hours}$. Assuming that each candle burns at a constant rate,in how many hours after being lighted,the ratio between the height of the first and second candles becomes $2:1$?

The mean proportional of $0.25$ and $0.04$ is

Two numbers are in the ratio $1: 2$. If $7$ is added to both,the ratio changes to $3: 5$. The greatest number is: