please help me answer both please........ it's urgent
Answers
17) none
18) none
please follow and thanks my answers
Step-by-step explanation:
17)Given that
X can finish a job in 4 hours
=>Work done by X in one day =1/4
Y can finish the same in 8 hours
=>Work done by Y in one day=1/8
Work done by both X and Y in one day together
=>(1/4)+(1/8)
LCM of 4 and 8=8
=>(2+1)/8=>3/8
Work done by both in One day=3/8
They both will finish the work together =8/3 hours
1 hour =60 minutes
(8/3)×60 minutes
(8/3)×60 minutes=>(8×60)/3 minutes
(8/3)×60 minutes=>(8×60)/3 minutes=>480/3 minutes
(8/3)×60 minutes
=>(8×60)/3 minutes
=>480/3 minutes
=>160 minutes
(8/3)×60 minutes
=>(8×60)/3 minutes
=>480/3 minutes
=>160 minutes
Option A
18)Juice lasts for 35 days
So Let the usage is X days
Usage in one day =X/35
Now the usage is increased by 40% of it
=>(x/35)+(40%×(x/35))
=>x/35+(40/100×(x/35))
=>x/35+(2/5×X/35)
=>X/36+(2X/5×25)
=>X/25[1+2/5)
=>X/35(7/5)
=>X/35(7/5)
=>7X/35×5
=>X/35(7/5)
=>7X/35×5
=>X/25
the juice usage in one day=X/25
So the usage of the given juice=25 days