boothanglove boothanglove

28-02-2017
Mathematics

contestada

If 120% of a is equal to 80% of b, which of the following is equal to a+b?

Respuesta :

H1a2r3s4h5 H1a2r3s4h5

05-03-2017

120%of a =80%of b
120×a/100=80×b/100
100 cancle on both sides
120a=80b
so a/b=80/120
a/b=2/3
So a=2 and b=3
a+b=2+3
a+b=5

Answer Link

Otras preguntas

What is the sum of 6 feet 10 inches and 8 feet 9 inches? A. 14 ft. 7 in. B. 15 ft. 7 in. C. 13 ft. 19 in. D. 15 ft. 19 in

Saturated fats found in animal products, such as bacon and cheese, are also called A. amino acids. B. cholesterol. C. lipids. D. triglycerides.

find the sales tax cor three CDs, if each CD is $14.29 and sales tax is 7.25%

Can your body make antibodies for pathogens that you have never been in contact with? Why of why not?

Name five generals who fought for the Union side and five generals who fought for the Confederate side during the American Civil War.

A barrel contains 1513 liters of water. 34 of the water was used to water plants. How many liters of water was used to water plants? How many liters of water ar

How do the atomic radius and metallic properties of sodium compare to the atomic radius and metallic properties of phosphorus? (1) Sodium has a larger atomic ra

True or False questions, please indicate a short expansion for each . (1) If there are no forces acting on a body, the body will experience no acceleration. (

Which group of elements contains a metalloid? (1) Group 8 (3) Group 16 (2) Group 2 (4) Group 18

Heterotrophs take in mass in the form of food. Food is either used to build molecules within the body or as fuel for cellular respiration. If used for cellular