a certain number is subtracted from each of the two terms of the ratio 21:35 to a give a new ratio 3:10 find the number subtracted
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let the no. be x. Then,
21-x/35-x = 3/10
(21-x) 10 = 3(35-x)
210-10x = 105-3x
-10x+ 3x = 105-210
-7x= -105
x = 105/7 = 15
thus the number subtracted is 15
21-x/35-x = 3/10
(21-x) 10 = 3(35-x)
210-10x = 105-3x
-10x+ 3x = 105-210
-7x= -105
x = 105/7 = 15
thus the number subtracted is 15
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