Abag contains yellow marbles and red marbles, 32 in total. the number of yellow marbles is 5 more than 2 times the number of red marbles. how many yellow marbles are there?

Let R=number of RED marbles, and Y=number YELLOW marbles.

There is a total of 32 marbles, or Y+R=32, => R=32-Y

"The number of yellow marbles is 5 more than 2 times the number of red marbles. " expressed in terms of R is then

Y = 5+ 2R

Substituting R=32-Y,

Y=5+2(32-Y)=5+32-y=54-2Y

Solve for Y

3Y=54

Y=54/3=18

There are 18 Yellow marbles.

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.