Problems based on Numbers Test 6

Question : 35 of 40

Marks: +1, -0

The sum of one-half and one-fifth of a number exceeds one-third of that number by

7 1 /3

. What is that number?

Solution:

Let the number be x; then

(x/2+x/5)=x/3+22/3

⇒{7x}/10-x/3=22/3

⇒{11x}/30=22/3

∴x={30×22}/{3×11}=20

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