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人気のある Word Problems >

Last year 90 schools participated in the State Spelling Bee. This year there were 20% more schools participating than last year. How many schools participated in the spelling bee this year?

解

L a s t ye a r 90 sc h oo l s p a r t i c i p a t e d in t h e St a t e Sp e ll in g B ee . T hi s ye a r t h ere w ere 20% m ore sc h oo l s p a r t i c i p a t in g t han l a s t ye a r . Ho w man y sc h oo l s p a r t i c i p a t e d in t h e s p e ll in g b ee t hi s ye a r ?

解

Amount after addition : 108

解答ステップ

Translate the problem into an equation:

x = 90 + 0.2 \cdot 90

x = 90 + 0.2 \cdot 90 : x = 108

Amount after addition : 108

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