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?

Question

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 :

Otras preguntas

The process by which rocks are broken down into smaller fragments by the atmosphere and other factors in the environment is called?

If 2 less than or equal too X less than or equal too 6, which of the following has the greatest value

A 4.5 newton object is placed in a tank of water. If the water exerts a force of 4.0 newtons on the object, will the object sink or float?

what is the cause and effect for the french citizens armies win their revolution for liberty and equality

Buck drove 220 miles in 5 hours. What was his average rate of speed?

What is the lateral area of the rectangular prism? Assume the prism is resting on its base. A. 135 in2 B. 270 in2 C. 300 in2 D. 310 in2

16 increased by twice a number is -24. Find the solution??

conversation between Hitler and gandhi

16 increased by twice a number is -24. Find the solution??

mreijepatmat mreijepatmat · Answer 1 · 2018-01-01T13:50:01+01:00

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