Twice a number is 2/5 of another number. If their sum is 70. Find the number
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Answer:
answer is 0.03, 69.997
Step-by-step explanation:
2(x*y) = 2/5
x+y = 70
Take, y= 70-x
2(x*(70-x)) = 2/5
5x/\2 - 350x + 1 = 0
using quadratic formula,
350 +- _/ 122500 - 20 / 10
350 +- 349.97 / 10
solution 1 = 350 - 349.97 / 10
= 0.3/10
= 0.03
solution 2 = 350 + 349.97/10
= 699.97/10
= 69.997
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