Question

2 numbers are such that the ratio between them is 3:5. If each is increased by 10 the ratio between the new numbers will be 7:9. Find the original numbers

Answer 1

Answer:

Let the numbers be 3x and 5x. According to the question we can write as (3x+10) / (5x+10) = (5/7) On cross multiplying we get 7(3x+10) = 5(5x+10) 21x+70=25x+50 On rearranging or transposing 70-50=25x-21x 4x=20 x=20/4=5 So the numbers are 15 and 25