Chinese online tutoring company 17 Education and Technology Group reported widening losses in the first quarter, even as revenue more than doubled.

In the three months through March, 17 Education saw net losses widen to 659.7 million yuan ($100.7 million) from 224.2 million yuan a year ago, according to its latest earnings report.

The expanding deficit came as spending on marketing, R&D and administration rose 217.8%, 58.2% and 165.3% year-on-year respectively.

In the first quarter, 17 Education’s revenue totaled 474.2 million yuan, up 107.1%, almost all of which came from sales of its online K-12 courses, which jumped 118% year-on-year.

The number of paid students enrolled in its courses grew 105.7% in the first quarter to 543,000, the financial report said.

For the current quarter, the company said that it expects revenue to be between 640 million yuan and 660 million yuan, representing a year-on-year increase of between 135.8% and 143.2%.

Contact reporter Ding Yi (yiding@caixin.com)

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