Question

5470

Machine A and machine B both make car parts.
Machine A makes 7 parts every 10 minutes.
Machine B makes 16 parts every 15 minutes.
On Monday
machine A makes parts for 12 hours
machine B makes parts for 10 hours
Work out the total number of parts made by the two machines on Monday.

Answer 1

Answer: 1144

Explanation:

Given: Machine A makes 7 parts every 10 minutes.

i.e. it makes
`(7)/(10)` parts in 1 minute.

Machine B makes 16 parts every 15 minutes.

i.e. it makes
`(16)/(15)` parts in 1 minute.

On Monday,

machine A makes parts for 12 hours(720 minutes). [1 hour = 60 minutes, 12 hours = 12 x 6 = 720 minutes]

i.e. Total parts made =
`(7)/(10)*720`

i.e. Total parts made = 504

machine B makes parts for 10 hours(=60x 10=600 minutes)

i.e. Total parts made =
`(16)/(15)*600`

i.e. Total parts made = 640

Total parts made by both machines = 504+640 =1144

Hence, the total number of parts made by the two machines on Monday=1144.