In barrack there was food available for 30 days for some soldiers. After 10 days 60 soldiers left that barrack. Now, if that food is sufficient for more 10 days, find out the number of soldiers at initial period.​

Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c