5 is to 10 as 25 is to 50? is this right?
928792
If a is to 2a, then yes.
674984
Well lets say you wanted to know what 10% of 50 is....\n\nyou multiply 50 by .10 and that give you the answer.\n\n\n10% of 50 = 5
1000957
7/5.\n\n(2/5)^2 = 4/25, then divide by (1/5) to get 4/5.\n\nAs for the rest, it's (-2) * (-3) / 10 = 6/10 = 3/5.\n\n3/5 + 4/5 = 7/5.
38758
for 50 .5(10)(5) = 25\nfor 45 .5(9)(5) = 22.5\nfor 51 .5 (51)(1) = 25.5\nfor 70 .5(7)(10) = 35
207303
We could change the second + to 4 by putting a vertical small line\n\n5 + 5 + 5 = 550\n5 + 5 4 5 = 550
64301
I=1\nV=5\nX=10\nL=50\nC=100\nD=500\nM=1000
706413
7\n\nUnless you are using base 6 or base 7.  In base 6, 2 plus 5 is 11; in base 7, it is 10.
560559
9 and 4/10\n9 and 2/5\n47/5
164812
If it does not contain a decimal place I guess:\n5?
980924
Yes it is, the second number is the double of the first number.\n\nOr: if you divide the 5 by 10, you get the same result as dividing 25 by 30\n\nOr: if you've got 5 pancakes, and 10 persons who want to eat it, each person would get half a pancake (in an ideal world, that is, in our world, the western people would get all the pancakes, but that is a different story). If you would have 25 pancakes and 50 persons, then also everyone would have half a pancake
76594
both 1 and 5 are correct(they say the same thing!)
277095
For x=10 and y=5:\n\n10^2-5y^2 ?= (10+5)(10-5)\n100-25 ?= (10+5)(10-5)\n75 ?= (10+5)(10-5)\n75 ?= (15)(5)\n75 = 75\n\nFor x=10 only:\n\n10^2-y^2 ?= (10+y)(10-y)\n100 - y^2 ?= (10+y)(10-y)\n100 - y^2 ?= 100 + 10y - 10y - y^2\n100 - y^2 = 100 - y^2\n\nFor y=5 only:\n\nx^2-5^2 ?= (x+5)(x-5)\nx^2 - 25 ?= (x+5)(x-5)\nx^2 - 25 ?= x^2 + 5x - 5x - 25\nx^2 - 25 = x^2 - 25\n\nThe idea with such things is to make both sides look the same to prove (or if not, disprove) equality.
1187917
20\n\none half of what 50 is 10 less than = 60/2 = 30\n\n20 is 10 more than 10, and 10 less than 30
805977
(75-25)*100/25\n50*100/25\n200%
754341
$25 x .20 = $5\n\n$30 x .25 = $7.50\n\nThat is about the shortest way to them - just change the % to a decimal and multiply, remembering to put the decimal point in the right place.  I hope this helps.
876008
25 and 25. Every other number goes down 1 from 30 and every other number goes up 1 from 20.
931082
No.  It is sqrt{25 / 3} = sqrt{25} / sqrt{3} = 5 / sqrt{3} = 5 sqrt{3} / sqrt{9} = 5 sqrt{3} / 3.