DC Circuit analysis (Problem 1) Tagalog

DC Circuit analysis (Problem 1) Tagalog
A resistance of 10 ohms is connected in series with
two resistances each of 15 ohms arranged in parallel. What
resistance must be shunted across this parallel combination
so that the total current taken shall be 1.5 A with
20 V applied?

[@ericmcangel9752]

Thank you engr. Sir...

[@john4871]

Thank you po!