each orange and each apple costs ten rupees but costs is not singular but it is given it is singular - English - Subject-Verb Agreement

Question

each orange and each apple costs ten rupees but costs is not
singular but it is given it is singular whyyyyy????????

Priyanka Vaid · Accepted Answer

'Costs' is singular because it is used to refer to EACH apple or
orange, i e a single apple/orange

each orange and each apple costs ten rupees but costs is not singular but it is given it is singular .whyyyyy????????