Question

5470

Answer 1

Answer:  1144

Step-by-step explanation:

Given: Machine A makes 7 parts every 10 minutes.

i.e. it makes $\dfrac{7}{10}$ parts in 1 minute.

Machine B makes 16 parts every 15 minutes.

i.e. it makes $\dfrac{16}{15}$ 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 = $\dfrac{7}{10}\times720$

i.e. Total parts made = 504

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

i.e. Total parts made = $\dfrac{16}{15}\times600$

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.