At the corner store, Nico bought 5 pencils for $0.10 each and 3 pens for $0.50 each. He used t to represent the sales tax, in dollars, that he also paid. He paid a total of $2.12, including tax.

Nico wrote this equation to represent what he paid. What errors, if any, did he make?

5(0.10) + 3(0.50) - t = 2.12
He should have multiplied 0.10 by 3 instead of 5.
He should have multiplied 0.50 by 5 instead of 3.
He should have added t instead of subtracting t.
He should have multiplied by t instead of subtracting t.

Question

At the corner store, Nico bought 5 pencils for $0.10 each and 3 pens for $0.50 each. He used t to represent the sales tax, in dollars, that he also paid. He paid a total of $2.12, including tax.

Nico wrote this equation to represent what he paid. What errors, if any, did he make?

5(0.10) + 3(0.50) - t = 2.12
He should have multiplied 0.10 by 3 instead of 5.
He should have multiplied 0.50 by 5 instead of 3.
He should have added t instead of subtracting t.
He should have multiplied by t instead of subtracting t.

KjSaif · Answer

Welcome to Qc, do you have any idea what you think the answer is?

If not I can guide you to it.

CHEERQUEEN · Answer

i dont and thank you i am new so i have no idea what i am doing

KjSaif · Answer

Oh ok np lol.  Well first off,  know that if one pencil equals 10 cents, then  5(0.10) just means 5 pencils time the cost of the original price each.  Same goes for the  3 pens costing 50 cents  each.

CHEERQUEEN · Answer

ok you are a big help

KjSaif · Answer

T =  Tax,   but know that T was put in wrong.   They said subtracted by T = $2.12. That's wrong because the pen and pencil only cost $2.

KjSaif · Answer

The answer should be C.

KjSaif · Answer

He should have added the T instead of subtracting t.

CHEERQUEEN · Answer

thank you

KjSaif · Answer

np