2007 PSLE Math Question

2007 PSLE Math Question

There are some workers. They arranged chairs into short rows and long rows.
There are 18 short rows and 7 long rows.
Each long row has 16 more chairs than the short row.
Half of the chairs are arranged into long rows while
3/7 of chairs are arranged in short rows.
The rest of the remaining chairs are stacked in a corner.

a) What fraction of the chairs are stacked in the corner?
b) How many chairs are arranged in rows?


Solution

There are 7 units of chair altogether
(draw 7 units )