IELTS Task 1 :Time and Costs to Go Around The City

The table gives information about how long it took to travel around a city before and after the transport network was improved in four different form of transport. The bar graph shows how much it costs to use different kind of transport in town. The most significant facts to immerge from the table and the graph are that the fastest way to go around the city before and after improvements is taxi but it has the highest costs of all kind of vehicles.

Looking at the details in the table, the fastest conveyance to use is taxi for about 10 minutes while the least time is by using bus. After the improvements tram and bus become faster than before but taxi and car become slower.

The most expensive vehicles to look around the town is taxi for about 1.80 euro while bus is the cheapest for about 0.35 euro. Tram is more expensive than bus but cheaper than car.

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Such a pleasure to meet you again,
Here is my correction for yours.
Please look at the data carefully,

... to use is taxi for about 10 minutes (should be 9 minutes) while the least (it should not least but longest , least mean spend little time) time is by using (by bus/using bus is enough instead of by using bus) bus.

Note : please insert time "before the improvement" in this paragraph so that the reader realize it without searching on the data.

Also be very carefully and consistent on the tenses. In the first sentence of the first paragraph, you use past but suddenly you change it into present for the rest sentences.

Farida, it is a great chance to read your writing.
Allow me to give some additional insights.

The table gives information about how long it (who it refers to....) took to travel (...) different forms of transport. The bar graphchart shows how much it coststhe cost to use different kinds of transport in town.

The most significant facts to immerge from the table and the graph ...
Overall, it can be seen that, taxi is the fastest way to go around the city before and after improvements. What is more, it is the most expensive means of transport.

Just be careful with your subject verb agreement, and singular plural. :)