40% of a number is more than 20% of 650 by 190. Find the number?

A. 600
B. 700
C. 800
D. 900

C. 800

Let the number be x.

40% of a number means: (40/100) * x

20% of 650 means: (20/100)*650

by means = 190

So,

(40/100)*x is more than (20/100) * 650 means (40/100)*x is higher than (20/100)*650

Therefore, 

(40/100)*x-(20/100)*650=190

40x/100-(20*650)/100=190

2x/5-130=190

2x/5=190+130

2x/5=320

2x=320*5

2x=1600

x=1600/2

x=800 (Answer)

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