Question
Some pupils board a school bus.
At Bus Stop A, 57 of them alight
and 8 pupils board.
At Bus Stop B, 27 of the pupils alight
and 10 board.
If there are 20 pupils on the bus now,
how many pupils are on the bus at first?
3 m

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Some pupils board a school bus.
At Bus Stop A, 57 of them alight
and 8 pupils board.
At Bus Stop B, 27 of the pupils alight
and 10 board.
If there are 20 pupils on the bus now,
how many pupils are on the bus at first?