Question

the Tulcrum and the load.
12.10 : Picking up an obje
Lever of the first order Lever of the second order Lever of the third order
The fulcrum is in the The load is in the centre. The effort is in the centre
centre, the load is at one the fulcrum on one side, the fulcrum on one side
end while the effort is at and the effort, on the other and the load on the othe
the other end
side
side.
Lood
Load
Effort
Fulcrum
Effort
Effort
Fulcrum
Fulcrum
please give some examples of it​

Answer 1

Answer:

Given :-

75% of total 1500 are boys.

⅓ are boys

And No. of girls = 40%

To find :-

Total students

Solution :-

No. of boys :-

75% of 1500

75/100 × 1500

75 × 15

1125 boys

Now,

Numbers of girls = 1500 - 1125

=> 375

Total spectacles =>

⅓ × 1125

375

In girls

40/100 × 375

4/10 × 375

150

Total students that wear spectacles = 150 + 375 = 525

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