There are 500 passengers on a train.

7/20 of the passengers are men.

40% of the passengers are women.

the rest of the passengers are children.

work out the number of children on the train?

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How to use order of operation in 20 divide by 4 multiply 5 = 1

2x minus y equals 6, x plus y equals negative 3

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?