Convert following into tons. 670 quintals
A.6700 tons
B.670 tons
C.67 tons
D.6.7 tons

Hint: Use quantity conversion. Conversion of units is the conversion between different units of measurement for the same quantity.

Complete step-by-step answer:
We know that,
1 quintal = 100Kgs.
1 ton = 1000kgs.
But we need to convert quintals into tons.
So let’s find the relation between them.
10 quintal = 1000Kgs
1 ton = 1000Kgs.
So now since right hand sides are same ,
1 ton = 10 quintals.
Now,
? Tons = 670 quintals
We can use unitary method
?= \[\dfrac{{670}}{{10}}\]
\[ \Rightarrow 67\]
Thus 670 quintals = 67 tons.
So option C is the correct answer.

Additional information:
Ton and quintal both are units used to measure weight.
We usually know kilogram, gram units.
But when it needs to measure quantity in bulk like trucks of food grains, steel ,iron or heavy materials we use these higher units.
There can be slight variation in conversion of these standards from country to country.
For example in U.S. 1 ton= 9.072 quintals.

Note: Don’t miss or add a single extra zero ,that will definitely make your problem wrong.
Be specific in conversions.
Else first make their one part of the same unit and then compare.