there are 42 passengers on a bus. the ratio of the number of adults to the number of children on the bus is 1:6. Half way through the journey, 4 adults boarded the bus while 2 children alighted. what is the ratio of the number of adults to the number of children still on the bus? (simplest form please)
*please answer immediately. it might sound long but I'm sure it's not that hard. i'm just dumb or something. this has to bepassed up tomorrow):