Question

Joe will need 18 scoops of dried lentils to have enough for both the lentil barley and the lentil salad.Before conducting some experiments a scientist mixes1/2 gram of substance A with3/4 gram of substance.B If the scientist uses 1/8 gram of the mixture for each experiment, how many experiments can be conducted?

Answer 1

10 experiments

Explanation:

Given:

Amount of substance A =
`(1)/(2)\textrm{ g}`

Amount of substance B =
`(3)/(4)\textrm{ g}`

Total amount of mixture =
`(1)/(2)\textrm{ g}+(3)/(4)\textrm{ g}=(5)/(4)\textrm{ g}`

Now, amount used for each experiment =
`(1)/(8)\textrm{ g}`

So, number of experiments conducted =
`\frac{\textrm{Total amount of mixture}}{\textrm{Amount used for each experiment}}=((5)/(4) )/((1)/(8) ) =(5)/(4)* 8=10`

Therefore, the number of experiments conducted are 10.