Older people – those of you who are more than 15 years old – will probably need a calculator to do this, but you younger kids can do it in your heads.
The cabinet has just approved new rates for motorcycle taxis. You need pay no more than 25 baht for the first two kilometres that you travel – less if you go a short distance.
After the first two kilometres, you will pay 5 baht for the each of the next 3 to 5 kilometres. Then for kilometres 6 through 15 you will pay 10 baht for each kilometre.
If you travel more than 15 kilometres, you need to negotiate with the driver. That means the two of you must agree on the price.
OK. How much do you need to pay if your trip is four kilometres? That's easy: 25 + 5+ 5 = 35 baht.
How about eight kilometres? That's easy too: 25 + 5+ 5+ 5 + 10 + 10 +10 = 70 baht.
You don't need a calculator, but maybe your mother does.