Question

The road is 500 m long and 18% is it is damaged by flood. what length of the road is not damaged

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Answer 1

18% damaged = (500*18)/100= 90

there are 90m damaged

length of undamaged road :

500-90=410m

Explanation:

Answer 2

410 meters.

Explanation:

first, we find the percentage not damaged, being 100-18=82%.

next, we multiply the length of the road with that percentage. recall that
`a\%=0.01(a)`.

now, to solve the problem.

`500*82\%\\=500*0.82\\=5*82\\=410\:\text{meters}`

the third step there cancels out 100 and 0.01 which leaves us with simply
`5*82.`