Question

After working 3 hours, Mary has made 31 cogs. At the same rate how many cigs can she make in 40 hours?

- 40(3)/31
- 3(31)/40
- 40(31)
- 40(31)/3
- (3)(31)

Answer 1

`3 \text{ hours } \longrightarrow 31 \text{ cogs}`

Find 1 hour:

`1 \text{ hours } \longrightarrow 31 / 3 \text{ cogs}`


`1 \text{ hours } \longrightarrow (31)/(3) \text{ cogs}`

Find 40 hours:

`40 \text{ hours } \longrightarrow (31)/(3) * 40 \text{ cogs}`


`40 \text{ hours } \longrightarrow ((40)31)/(3) \text{ cogs}`

Answer: Option 4