A NGO distributed masks and face shields to all people who were out for a delivery.
They initially purchased 20,000 masks and 10,000 shields, and gave away those in a few weeks.
The cost of one mask was $0.1 and one face shield was $0.3.
How much expenditure did the NGO do?
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Answer:
a :- 20000
b:- 30000......
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