This is Rollup Contest.
I'll be dropping a simple quize of which the first 10 winners will be rewarded with 0.05
Today's quiz :
7 years ago, my sister was twice the age I was then plus 2 years making her 32, the combined age of us 2 years ago was 57, how old am I now?
Send your answer in the comment below.
Only winners who upvote will be rewarded. Goodluck.
#rollup
You are x in the solution
sister is y in the equation
x-2+y-2=57
x+y=61
2(x-7)+2=32
2x-14=30
2x=44
x=22 your age
y=39, your sister's age
2 years ago they were 20 and 37=57
7 years ago, sister was 32 and you were 15--32 is 2 x 15 +2.
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You are x
sister is y
x-2+y-2=57
x+y=61
2(x-7)+2=32
2x-14=30
2x=44
x=22 your age ANSWER
y=39, sister's age
2 years ago they were 20 and 37=57
7 years ago, sister was 32 and you were 15--32 is 2 x 15 +2.
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7 years ago,
I was x years and my sister was 2x+2=32
2x+2=32------eqn1
2 years ago,means 5 years as passed
My age x+5 ,my sisters age=32+5
From eqn 1,
2x+2=32
2x=32-2
2x=30
x=15
So 7 years ago,i was 15 and my sister was 32.
2 years ago,
x+5
15+5=20.
32+5=37
So 2 years ago,i was 20 and my sister was 37.
Presently,
20+2=22 yrs
37+2=39yrs
Hence i am 22years old and my sister is 39 years old
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22 year old
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Haha solve on 9 standard but now am MA
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You are x in the solution
sister is y in the equation
x-2+y-2=57
x+y=61
2(x-7)+2=32
2x-14=30
2x=44
x=22 your age
y=39, your sister's age
2 years ago they were 20 and 37=57
7 years ago, sister was 32 and you were 15--32 is 2 x 15 +2.
Downvoting a post can decrease pending rewards and make it less visible. Common reasons:
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Let be ,my means x ; and sister means y;
7 years ago
y= 2x+2=32
That means 7 years ago i was 15 and my sister was 32;
2 years ago
Hear we have 5 years gap ; that means i am 20 and my sister is 37 in 2 years ago.
At prest means hear we get 2 years gap
That means now i am 22 and my sister is 39.
The answer is 22 of that boy at present age.
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