80% of children in a class maintain a collection of different types of items. 40% of them collect
old coins, 45% collect pebbles of different colours and rest collect stamps. How many children
are there in the class if 45 of them collect stamps?
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Let total no. of students be x
No. of students maintaining collection of different types of items = 80% of x
= 80/100 × x
= 4x/5
Students collecting old coins = 40% of 4x/5
= 40/100 × 4x/5
= 8x/25
Students collecting pebbles = 45% of 4x/5
= 45/100 × 4x/5
= 9x/25
Students collecting stamps = 45
The image uploaded is the equation after STAMPS one statement.......Total no. of students is 375
Hope it helps!
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