## Microeconomics - Elasticity - price, incomes, cross, analysis

Hello I need your help as soon as possible with this excercise. I tried to do it many times but for me it seems to be impossible (few data?) But I want to ask you if you see maybe a solution.

Demand function:
$Qs = ((200-2*Ps)(Pt-Pu))/(10*I)$

Data:
Four days ago:
price for S was 45 \$.
For good T was 25 \$
for a good U was 10 \$.
Income was 10 \$.

Calculate:
- Price elasticity of the demand for good S four days ago.
- Income elasticity of the demand for good S four days ago.
- cross elasticity of the demand for good S in relation to prices of goods T and U.