Alocal hamburger shop sold a combined total of 498 hamburgers and cheeseburgers on tuesday. there were 52 fewer cheeseburgers sold than hamburgers.

275 hamburgers and 223 cheeseburgers were sold on Tuesday.

Solution:

Assume hamburgers as H and cheeseburgers as C,

From the given,

Total number of hamburgers and cheeseburgers sold on Tuesday is 498 i.e.

There were 52 fewer cheeseburgers sold than hamburgers i.e.

On substituting (1) in (2) we get,

On substituting (3) in(1) we get,

the mongolian invasion of china and central asia resulted in a disruption of the silk road as the chinese garrisons lost support from the chinese kingdoms which fell under the mongols. however, as the mongols established a formal dynasty in china, the successors of genghis khan restored the garrisons along the silk road allowing the safe travel caravans again.

the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.