A packet contains 39 sweets. The sweets are all red, yellow or green in the ratio of 5:4:4
Find how many yellow sweets are in the packet.

no cheating ha na cheating

there are 12 yellow sweets

the ratio of red, yellow or green sweets are 5:4:4 then

red, yellow or green sweets be 5x ,4x &4x{suppose}

total no of sweets are 39

then.

5x+4x+4x=39

or,13x=39

or,x=39/13

x=13

then. putting value of x in yellow sweets

(4x)=4*3=12

hence there are 12 yellow sweets in the packet

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

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