Question

' (29 - 7.2) - 0.8 ' equals

• A. 37
• B. 35.4
• C. 21
• D. 22.6

Answer 1

The correct option is C

21

We know that $(x-y)-z=x-(y+z)$, for all numbers $x$, $y$ and $z$.

Since the above is true for all the numbers, it must be true for $x=29$, $y=7.2$ and $z=0.8$ also.

So, $(29-7.2)-0.8=29-(7.2+0.8)=29-8=21$