15. Two marks exercise problems X

1. A tank can hold \(200\) litres of water. At present, it is only \(40\%\) full. How many litres of water to fill in the tank, so that it is \(75\%\) full?

 

\(l\)

 

2. Which is greater $16\frac{2}{3}$ or $\frac{2}{5}$ or \(0.17\)?