4. An examination was taken by four boys and six girls. The mean mark of the 10 pupils was 54.
(a) Calculate the sum of the marks obtained by all the 10 pupils.
(b) Given that the mean mark of the four boys were 48, calculate the mean mark obtained by the six girls.
Answers
Answer:
There were two food friends ratio & proportions living opposite to each other.
Ratio Used to live in a building which has two floors
Top floor Numerator & Bottom Floor Denominator
While Proportion used to live in a house having two side by side portions
on Left side antecedent and 'right side one consequent.
One Day they had a fight Ratio said that , i am larger as i have two floors and proportion said i am better as i have two portion side by side.
Arguments keep going on until a wise man Equation came and told them that they both are equal and same .
Its just the way you see.
He asked Ratio to see proportion house by tilting neck 90° and then he noticed that proportion also has two floors .
and then proportion see ratio house by tilting neck 90° and found his portion were also side by side.
They hugged each other and stayed together in equal ratio & proportion after that.