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Explanation:
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
\begin{gathered} \\ \end{gathered}
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