Ответ:

Пошаговое объяснение:

1) 620------------100%

х -----------------35%.

620/x = 100/35;

x=620*35/100;

x= 217.

*******************

2)1080--------------100%

х-----------------------40%

1080/x = 100/40;

x=1080*40/100;

x=432.

*********************

3) 99-----------------100%

x ----------------------- 11%​

99/x = 100/11;

x=99*11/100;

x= 10.89.