Mathematics must bow

Mathematicians in the house ,I mean lovers of mathematics ,say hi

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3times a number is equal to 57
What is the number

variation Continue
D varies directly as y ,when x is 6 y is 4 ,find x when y is 10
Soln x =ky
6= k4
K =3/2
= x =3/2y
x = 3/2 (10)
x=30/2
x =15

VARIATION
We have 4 major types of variations
;1) Direct
2)inverse
3)joint
4)partial
By direct we mean a change between two major variables eg x and y

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If you can solve mathematics, you can resolve some unbalanced equations in your life

Find the simple interest on #5000 for 5 years at 5 % rate.
In this kind of problem, the most important factor is that it is rated in percentage
ie 100
P*R*T
5,000*5*5/100=1,250