Question

A motorist travels for 3 hours at a certain speed and then increase his speed by 10 km for the next 4 hours If he travels 335 km altogether, Find his speed for the First 3 hours​

Answer 1

See the answer below.

Explanation:

We know that:
`d=S* t`

So, using the given data, we can write an equation for the total distance travelled as:

`3* S+4* (S+10)=335\\\\\Rightarrow S\approx 42.1\:Km/h`

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