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פּוֹפּוּלָרִי 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?

פתרון

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 ?

פתרון

Amount after addition : 108

צעדי פתרון

Translate the problem into an equation:

x = 90 + 0.2 \cdot 90

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

Amount after addition : 108

דוגמאות פופולריות

Suppose you draw one card from a standard 52-card deck. What is the probability that it is a red or a Jack?Mina is twice as old as Marko. The sum of their ages is 45.The sum of three numbers is 149. The third number is 4 times the second. The first number is 5 more than the second. What are the numbers?61 decreased by twice a number Christine opened a savings account and deposited 100.00. The account earns 1% interest, compounded monthly. If she wants to use the money to buy a new bicycle in 3 years, how much will she be able to spend on the bike?