In a class, number of girls is x and that of boys is y. Also the number of girls is 10 more than the number of boys. If number of boys is 20. Then the number of girls is

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Solution

The correct option is A 30
Number of girls $= x$
Number of boys $= y = 20$

No. of girls is $10$ more than the no. of boys.
Therefore,
$x = 10 + y$
$x = 10 + 20 = 30$

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In a class, number of girls is x and that of boys is y. Also the number of girls is 10 more than the number of boys. If number of boys is 20. Then the number of girls is

The correct option is A 30Number of girls =xNumber of boys =y=20No. of girls is 10 more than the no. of boys.Therefore,x=10+yx=10+20=30

The correct option is A 30
Number of girls $= x$
Number of boys $= y = 20$

No. of girls is $10$ more than the no. of boys.
Therefore,
$x = 10 + y$
$x = 10 + 20 = 30$