Question
Some adults board a school bus.
At Bus Stop A, 13 of them alight
and 4 adults board.
At Bus Stop B, 58 of the adults alight
and 9 board.
If there are 18 adults on the bus now,
how many adults are on the bus at first?
3 m

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Some adults board a school bus.
At Bus Stop A, 13 of them alight
and 4 adults board.
At Bus Stop B, 58 of the adults alight
and 9 board.
If there are 18 adults on the bus now,
how many adults are on the bus at first?