Maggie's brother is 14 years younger than four times her age. The sum of their ages is 61. How old is Maggie?

Maggies brother is 4 years younger than twice her age. The sum of their age is 11. How old is Maggie

Maggie's brother,is 4 years younger than twice her age. The sum of their age is 11. How old is Maggie

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Carl M. answered • 01/05/17

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Let:

Maggies age = M

Brothers age = B

From the problem develop 2 equations:

B = 2M - 4 Equation 1

M + B = 11 Equation 2

Solve Eq. 2 for B to get: B = 11 - M then substitute into Eq. 1.

11 - M = 2M - 4

-3M = -15

M = 5 Maggie is 5 years old!

10x³+2x²-8x-6

Step-by-step explanation:

Total amount = ₹ (100x³ ‒ 5x + 3)

Amont spent in gift = ₹ (10x³ + 3x)

Amount spent in buying food = ₹ (80x³ ‒ 2x² +9)

Left amount = Total amount - (Amount spent in gift+Amount spent in buying food)

= (100x³ ‒ 5x + 3)- [(10x³ + 3x)+(80x³ ‒ 2x² +9)]

= (100x³ ‒ 5x + 3)-(10x³ +3x+80x³ ‒ 2x² +9)

= 100x³ ‒ 5x + 3-10x³-3x-80x³ +2x²-9

= 10x³+2x²-8x-6

Hence, this is the required solution.