One - fifth of a number is equal to 5/8th of another number . if 35 is added to the first number , it becomes four times of the second number. Find the second number?
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Answer:
Let the first number be x and second number be y.
According to the question,
1/5(x) = 5/8(y)
x/5=5y/8
by cross multiplying,
8x=25y
8x/25=y
so now, if 35 is added
x+35=4(8x/25)
x+35=32x/25
again by cross multiplying
25(x+35)=32x
25x+875=32x
875=32x-25x
875=7x
x= 875/7 which is 125
now the question is to find the second number.
in the beginning of the question we saw that
y=8x/25 (substituting x for 125)
y= 1000/25
y=40
hence the first number is 125 and the second number is 40
Step-by-step explanation:
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