Answer:
0.775
Explanation:
The quick way of doing this is to simply divide 1550 by 2000. Put it into your calculator as
1550
÷
2000
=
And it gives you 0.775
You could do it a longer but much more instructive way by factoring this into Prime factors.
1550: 2* 5 * 5 * 31
2000: 2 * 2 * 2 * 2 * 5 * 5 * 5
Now cancel out all the common factors.
2 * 5 * 5 is the HCF
31 in the numerator
40 in the denominator
Now divide these two 31 / 40 = 0.775
Either way, the answer is 0.775