Question

The perimeter of a park is 10 km . A wall is being constructed around it . If 4/5 of the wall has been constructed , how much part of the wall is incomplete

Answer 1

Perimeter of the park = 10km

Part of the wall's construction completed =

`(4)/(5)th \: of \: perimeter`

=

`(4)/(5) * 10`

(cancel 5 and 10)

=

`(4)/(1) * 2`

= 8km

•.• Part of the wall left (to be constructed) = 10km - 8km = 2km

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