1)one number is twice the other. When the large number of subtracted from 50, the result is 2 more than what the smaller is subtracted from 40. Find the number.
2) Soman is now 4 times as old as Leela. Five years ago Soman was 7 times as old as Leela. Find the present ages of each.
3)(check the attachment)>>35th question
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Answer:
1) the two numbers: x,y
Given: y=2x
Application:
50-y=2+(40-x)
50-2x=2+(40-x)
50-42=x
x=8
2) Soman:x
Leela:y
Present ages:
x=4y
Before 5 years:
x-5=7(y-5)
4y-5=7y-35
4y=7y-30
4y-7y=-30
-3y=30
3y=30
y=10
x=4y=40
3)3⁴*2²
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