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Problems on Numbers

Problems on Numbers

1. When 15 is subtracted from 7 times the number, the result is 10 more than twice of the number. Find the number:
(a) 4        (b) 15
(c) 7.5      (d) 5

2. Sum of a rational number and its reciprocal is 13/6. Find the number:
(a) 2         (b) 3/2
(c) 4/2     (d) 5/2

3. The difference between a number and its 3/5 is 50. Find the number:
(a) 100    (b) 110
(c) 120    (d) 125

4. The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:
(a) 15     (b) 20
(c) 25     (d) 35

5. If one-third of one-fourth of a number is 15, then three-tenth of that number is:
(a) 34      (b) 44
(c) 54    (d) 64

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Written by: Asad Aziz on February 20, 2018. as Comments

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