Thatonedude897 Thatonedude897

03-11-2020
Mathematics

contestada

Mary is five times as old as Fred. In three years Mary will be 4 times as old as Fred. Find their present ages?

Respuesta :

karun26 karun26

03-11-2020

ans

here let mary age be x and fred be y

1st equation

x= 5y

2nd equation

x+3 =4(y+3)

now from 1st equation putting value of x in equation 2

x+3 = 4y+12

5y+3 = 4y +12

y = 9

so fred is 9 and mary is 45

Answer Link

Otras preguntas

3. All boys at a certain High school play basketball, tennis or volleyball. If 31% play basketball, and 45% play tennis, find the percentage of boys who play vo

What triggered the Great Depression?

WILL GIVE BRAINLIEST!! Calculate: (2^5x5^22-2x5^21)/(25^10)

From the nutrition facts label, determine how many calories are in one serving of this breakfast sandwich. O 170 mg O 130 calories 290 calories 820 mg

According to the CIA World Factbook, the literacy rate in Nigeria is 59%. This means that just over half of the population over the age of 15 can read and write

Find the value of x.

[tex]( - 9) { }^{2} - \sqrt[3]{8?} [/tex]

7. “With his strong, athletic build and fine coordination he is naturally jocular.” a. Jocular is used correctly b. Jocular is used incorrectly

Bobby is looking at his math grades. He has written down his last 5 test scores in the data set below. 76, 98, 88, 82, 79 Determine the mean, median, and range

puanımı alıp da takip etmeyip ve şikayet edenlere haram olsun iyi ramazanlar