Maths club

Maths club Its a page which tends to share maths links ideas ,works and research in it absolute capacity

23/04/2019

SOLUTION.
5. (B)If 20% of the number is 12, the number must be 60. Then 30% of 60 is 0.30 × 60 = 18.

22/04/2019

8 2003 #
5. If 20% of a number is 12, what is the 30% of the same number?
(A) 15. (B) 18. (C) 20. (D) 24. (E) 30

22/04/2019

SOLUTION.
4. (C) Let "b" equals the number of bicycles and "t" equals the number of tricycles. Then the number of vehicles is b + t = 7, and the number of wheels is 2b + 3t = 19. Because
b = 7 - t, it follows that ,by substitution of the value of "b"
2( 7 - t ) + 3t = 19
14 - 2t + 3t = 19
14 + t = 19
t = 5.

21/04/2019

8 2003 #
4. A group of children riding on bicycles and tricycles rode past Billy Bob's house. Billy Bob counted 7 children and 19 wheels. How many tricycles were there?
(A) 2. (B) 4. (C) 5. (D) 6. (E) 7.

21/04/2019

SOLUTION.
(D) There are 120 - 30 = 90 grams that are not filler .
So (90/120) ×100% = 75% is not filler.

20/04/2019

8 2003 #
3. A burger at Ricky C's weighs 120 grams, of which 30 grams are filler. What percent of the burger is not filler?
(A) 60%. (B) 65%. (C) 70%. (D) 75%. (E) 90%.

20/04/2019

SOLUTION.
2. (C) The smallest prime is 2, which is a factor of every even number. Because 58 is the only even number ,
It has the smallest prime factor.

19/04/2019

PRIME FACTOR.
Writing a number as a product of prime numbers is called a prime factorization of the number. For example:

34866 = 2×3×3×13×149

The terms in the product are called prime factors.

19/04/2019

8 2003 #
2. What of the following numbers has the smallest prime factor?
(A) 55. (B) 57. (C) 58. (D) 59. (E) 61.

19/04/2019

SOLUTION:
(E) A cube has 12 edges, 8 corners and 6 faces. The sum is 26.

18/04/2019

8 2003 #
1. Jamie counted the number of edges of a cube , Jimmy counted the number of corners, and Judy counted the number of faces. They then added the three numbers. What was the resulting sum?
(A) 12. (B) 16. (C) 20. (D) 22. (E) 26.

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