We have the equation: rg = 2 x rh - 10 and rg + rh = 415;
We solve them: rg = 2 x rh - 10 and rg = 415 - rh;
Then, 2 x rh -10 = 415 - rh;
Finally, 3 x rh = 425;
rh = 425 ÷ 3;
rh = 141,66 (the number of rooms at hotel h). There is something wrong with this number and there is something wrong with the this problem!!!