Question

Dr. Brown did 6 experiments at 7AM. Dr. Rachal did 8 experiments at 6PM. They both had 564 tools each. Dr. Brown used 386 and Dr. Rachal used 236. How many more experiments do they do with the tool? How many tools are left?

Answer 1

Explanation:

Total number of tools for both = 564.

Dr Brown used 386 tools for 6 experiments.

average number of tools per experiment used by Dr Brown =
`(386)/(6)`

= 64
`(1)/(3)`

Dr Rachal used 236 tools for 8 experiments.

average number of tools per experiment used by Dr Rachal =
`(236)/(8)`

= 29
`(1)/(2)`

i. The number of more experiment that can be done by Dr Brown = (564 - 386) ÷ (64
`(1)/(3)`)

= 2.7668

Dr Brown can do two more experiments.

The number of more experiments that can be done by Dr Rachal = (564 - 236) ÷ (29
`(1)/(2)`)

= 11.1186

Dr Rachal can do 11 more experiments.

ii. Number of tools left after Dr Brown's experiments = 564 - 386

= 178

Number of tools left after Dr Rachal's experiments = 564 - 236

= 328