Question

please help me answer both please........ it's urgent​

Answer 1

Answer:

17. x+y

4+8= 12 hours

12 hours = 12 ×60 min

= 720 min

d) none

18. Percentage increase = 40% × 35

Percentage increase = 40% × 35New value =

Percentage increase = 40% × 35New value =35 + Percentage increase =

Percentage increase = 40% × 35New value =35 + Percentage increase =35 + (40% × 35) =

Percentage increase = 40% × 35New value =35 + Percentage increase =35 + (40% × 35) =35 + 40% × 35 =

Percentage increase = 40% × 35New value =35 + Percentage increase =35 + (40% × 35) =35 + 40% × 35 =(1 + 40%) × 35 =

Percentage increase = 40% × 35New value =35 + Percentage increase =35 + (40% × 35) =35 + 40% × 35 =(1 + 40%) × 35 =(100% + 40%) × 35 =

Percentage increase = 40% × 35New value =35 + Percentage increase =35 + (40% × 35) =35 + 40% × 35 =(1 + 40%) × 35 =(100% + 40%) × 35 =140% × 35 =

Percentage increase = 40% × 35New value =35 + Percentage increase =35 + (40% × 35) =35 + 40% × 35 =(1 + 40%) × 35 =(100% + 40%) × 35 =140% × 35 =140 ÷ 100 × 35 =

Percentage increase = 40% × 35New value =35 + Percentage increase =35 + (40% × 35) =35 + 40% × 35 =(1 + 40%) × 35 =(100% + 40%) × 35 =140% × 35 =140 ÷ 100 × 35 =140 × 35 ÷ 100 =

Percentage increase = 40% × 35New value =35 + Percentage increase =35 + (40% × 35) =35 + 40% × 35 =(1 + 40%) × 35 =(100% + 40%) × 35 =140% × 35 =140 ÷ 100 × 35 =140 × 35 ÷ 100 =4,900 ÷ 100 =

Percentage increase = 40% × 35New value =35 + Percentage increase =35 + (40% × 35) =35 + 40% × 35 =(1 + 40%) × 35 =(100% + 40%) × 35 =140% × 35 =140 ÷ 100 × 35 =140 × 35 ÷ 100 =4,900 ÷ 100 =49

e) none

Answer 2

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

(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/25[1+2/5)

=>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