Math Comp - Junior Ind
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Transcript of Math Comp - Junior Ind
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 1/18
2011 Bali Math Competition
Junior Division
Individual Round
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 3/18
Question 2
30% of watermelons are yellow. 70% of bananas are
yellow. If there are 80 watermelons and 100
bananas, how many yellow fruits are there?
A) 94
B) 98
C) 102
D) 106
E) 110
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 4/18
Question 3
Saras house is in a blackout. She wants to take outsocks randomly from the drawer. If the colors of socks are red, yellow, green, and blue, how manysocks does she need to draw out to make sureshe has one pair of same color?
A) 2
B) 3
C) 4D) 5
E) 6
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 5/18
Question 4
Sam owns some zebras and ducks. He counted thenumber of total legs of the animals he owns,which turned out to be 28. If the total number of
animals is 10, how many ducks does Sam have?A) 5
B) 6
C) 7
D) 8
E) 9
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 6/18
Question 5
Find the next number in the sequence
1, 1, 2, 3, 5, 8, ______A) 9
B) 10
C) 11D) 12
E) 13
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 7/18
Question 6
Sophia is planting trees every 5 meters. If she
planted along a wall which is 100 meters long,
how many trees did she plant in total?
A) 20
B) 21
C) 22D) 23
E) 24
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 9/18
Question 8
Find the sum.
1+2+3+4+5+6+7+8+...+97+98+99+100
A) 4950
B) 5050
C) 5150
D) 5250
E) 5350
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 10/18
Question 9
A triangle has sides with length 8cm and 2cm.
Which of below CANT be length of the other
side?
A) 7cm
B) 8cm
C) 9cmD) 10cm
E) 11cm
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 11/18
Question 10
Adam is shorter than Daniel and Chris. Chris is not
the tallest and Eric is not the shortest. If Bob is
shorter than Eric who is the shortest one?
A) Adam
B) Bob
C) Chris
D) Daniel
E) Eric
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 12/18
Question 11
How many squares are there?
A) 16B) 26
C) 30
D) 36
E) 51
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 13/18
Question 12
Adam and Bobs average income is $300 per month.
If Chriss average income is $600 per month, what
is Adam, Bob, and Chriss average income?
A) $300
B) $350
C) $400
D) $450
E) $500
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 14/18
Question 13
Adam has a son called Bob. Adams age was twice
of Bobs five years ago. If the sum of their age
right now is 70, how old is Adam now?
A) 30
B) 35
C) 40
D) 45
E) 50
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 15/18
Question 14
8/7/2019 Math Comp - Junior Ind
http://slidepdf.com/reader/full/math-comp-junior-ind 17/18
Question 17
A sloth is climbing a tree. He climbs 80cm duringthe day and he slips down 30cm back during thenight. If he started climbing a 8m tall tree, by
when would he have reached the top?A) 15th day at midnight
B) 15th day at noon
C) 16th day at midnight
D) 16th day at noon
E) 17th day at midnight