Question

7-)a worker mekes a toy every 2/3 hr. if he works for 7 whole 1/3 hrs. then how many toys will he make?

8-) 10 men can finish the construction of a wall in 8 days . haw many men are added to finish the work in half a day?

Answer 1

7) Time spent by the worker to make a toy =2/3 hrs.

Total time spent by worker to make toys=22/7 hrs.

No. of toys formed=Total time/Time to make a single toy.=22/7/2/3=22/2=11.

So, the worker made 11 toys.

8) No. of men which can finish the construction of the wall in 8 hrs = 10

No. of men who can finish the work in 1/2 day=x(Let)

(we know the product of the no. of days to the no. of people always remains the same)

so, 8*10=1/2*x

80=x/2

x=80*2=160 men

So, 160 men are needed to complete the work in half a day.

Answer 2

Answer:7> 11 Toys
             8>160 men

Step-by-step explanation: 7> 7 whole 1/3 hrs = 22/3 hrs

The worker make 1 toy in 2/3hrs
∴The worker will make 22/3÷2/3 = 11 toys

8> According to question:
10 men complete a work in 8days
∵10men complete 1/8 work in 1 day.
Thus, 1 men complete 1/80 work in 1 day.
So,
1/80 × x = 2 ( because reciprocal of 1/2 is 2)
After solving we get x = 160.
∴ Answer = 160 men.

Hope you could understand.