The pie chart below shows the different colours of buttons that Meha has. She has an equal number of blue and green buttons. Blue buttons 36 Green buttons 1 Red 4 buttons (a) What fraction of the buttons are blue buttons and green buttons altogether? (b) What fraction of the buttons are blue? (c) How many red buttons does she have?
Answers
Answer
Q -What fraction of the buttons are blue buttons and green buttons altogethr
Ans 36
Q -What fraction of the buttons are blue?
What fraction of the buttons are blue? Ans -36
Q-How many red buttons does she have?
Ans- 12
Explanation
Equal number of blue and green buttons are 36
Of the total buttons,1/4 of the buttons are red
1–1/4=3/4 of the buttons are blue and red together
Let the total numbers of buttons be T
3/4 of T=36, 3T/4=36, 3T=36*4=144
T=144/3=48
Total buttons=48
Fraction of blue and green buttons to the total buttons=36/48=3/4
Fraction of blue and green buttons to the red buttons =36/12=3/1
Let total=T
Number of red=T(1/4)=x/4
Balance=T-T/4=3T/4=36( B+G)
T=36×4/3=48
R=48/4=12
B+G=(48–12)=36
Fraction=36/48=3/4
Note.since R is 1/4 then naturally B+G=1–1/4=3/
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