Question

In a village the ratio between the number of graduates and literates is the same as the ratio between the number of literates and the population of the village. If there are only two graduates amongst the 11250 villagers how many villagers are literates ?

Answer 1

Let the no. of literate person be x, no. of graduates be y and the population be z

now we have
total population = 11250
no. of graduates = 2

y : x = x : z
2 : x = x : 11250
2/x = x/11250
( cross multiplication)
2 × 11250 = x × x
22500 = x²
√22500 = x
150 = x

so the no. of literate person is 150