mrpjams7364 mrpjams7364

01-01-2018
Mathematics

contestada

If shane mailed out 40% of his holiday cards, and he still has 18 cards left to mail, how many total cards did he have to mail?

Respuesta :

mreijepatmat mreijepatmat

01-01-2018

Let x be the total number of holiday's cards:

1st, he mailed 40% of x → 0.4x
2nd, he still have 18 cards
3rd, x = 0.4x + 18 → x-0.4x = 18 → 0.6x = 18 and x = 18/0.6 → x = 30

Answer Link

Otras preguntas

The highest rate of fatal occupational injuries occurs among which industry sector?

An element with the general electron configuration for its outermost electrons of ns2np1 would be in which element group?

A scientist discovers an unknown multicellular organism that filters microorganisms from its marine habitat for food and reproduces sexually. Which kingdom does

How did american leaders think the marshall plan would help american businesses?

Find the length of the function over the given interval. x = 2y from y = −1 to y = 1

Why is it necessary to heat the samples prior to collection of the headspace samples?

What is a zone of inhibition? how did you measure the zone of inhibition? which unit of measurement was used?

If 30. 0 ml of 0. 150 m CaCl2 is added to 15. 0 ml of 0. 100 m AgNo3, what is the mass in grams of AgCl precipitate?

Students who have an insufficient level of english to pass state assessments are commonly referred to as what?

Topic: Nowadays, satellites are launched in packs into the Earth's low orbit for both economic and scientific purposes such as: internet provider, observing sta