1.

A number is equal to 40% of another number. What is the ratio of the first number to the second number ?

Answer»

7 : 10



Let the first NUMBER be X and the SECOND number be y.
Then, 4/7 of x = 40% of y
= 4/7 x x = 40/100 x y
= 4/7 x = 2/5 y
= x/y = 7/10 = 7 : 10



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