How much cement and sand needed for 840 bricks building a brick wall 10ft by 10ft?

1 ton bag and 5 cement.

Hello Student, Depends on the type of bricks you intend to use, it could fluctuate, deep frogs (the inset key) will obviously need more than say a solid type of brick, (which have a flat surface) wet-sand/dry sand etc all have an effect, but if you work on the ratio of 1:4 sand and cement around a tonne of mixed mortar for 750 facing bricks you shouldn't be so far out. Kindest Regards, TrueBuild

1 ton bag of building sand and 5 bags of cement. Regards.