This is a sum and difference problem, with the equations
R-N=35
R+N=635
The solution of which is
R=(635+35)/2=335
N=(635-35)/2=300
In general, the sum and difference problem can be solved (most of the time mentally) using
Larger number = (sum + difference)/2
Smaller number = (sum - difference)/2
He earns $509 a week. Work:
4581 divided by 9 $509
Robin earns $509 per week.
The angle that you need to choose is 2 I think
Hey there, if 1 kilogram equals 1,000 grams, then 2 kilograms equals 2,000 grams. Now, we divide 1,000 by 2 and that would give us 500. Then, we add 2,000 by 500 and that would give us 2,500 grams. 2.5 kilograms equal 2,500 grams.
The answer is: "TRUE"
3/2 = (3*16) / (2*16) = (48 / 32) .
