How to solve the last question on page 46 of the second volume of the fourth grade mathematics supplementary exercise? - Training Enrollment Network

How to solve the last question on page 46 of the second volume of the fourth grade mathematics supplementary exercise?

(1): at most

36*(63+57)

=36* 120

=4320 (yuan)

(2): At least

36*(58+42)

=36* 100

=3600 (yuan)

I hope the landlord can adopt it!

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