Question

Help please i need it by tonight

Answer 1

20

Explanation:

The following unit multipliers are used:

1 loaf of bread = 400g of flour = 0.4kg of flour:
`(0.4kg Of Flour)/(1 loaf)`

1 day = 64 loaves of bread:
`(64 loaves)/(1 day)`

∴Mass of flour needed to last for 20 days:

`(20 days)`×
`(64loaves)/(1day)` ×
`(0.4 kg)/(1 loaf)`

= 512 kg of flour

1 sack = 25 kg of flour

∴ x sacks of flour = 512 kg of flour

Cross-multiplication is applied:

(x sacks of flour)(25 kg of flour) = (1 sack)(512 kg of flour)

∴ x sacks of flour =
`((1 sack)(512kg Of Flour))/(25 kg Of Flour)`

= 20.48 sacks of flours

∴The minimum number of sacks = 20