Question

sand and cement are in the ratio 6:5 in a mixture weighing 671 kg. how much sand must be added to the mixture so as to make the ratio 8:5?

Answer 1

5x= 6(671 kg -x)

5x= 4026 kg - 6x

11x = 4026 kg

x = 366 kg,

366 kg of sand need to be added