Find the maximum number of tree which can plant 20 m apart on the two side of straight road 1760 m long

174
176
180
178

Correct Answer: 178

Explanation:

Number of trees that can be planted on one side of road = (1760 / 20) + 1
= 88 + 1
=89
∴ Trees on the both side = 2 x 89=178

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